GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2024-50195 (GCVE-0-2024-50195)

Vulnerability from cvelistv5 – Published: 2024-11-08 05:54 – Updated: 2026-08-05 11:42
VLAI
Title
posix-clock: Fix missing timespec64 check in pc_clock_settime()
Summary
In the Linux kernel, the following vulnerability has been resolved: posix-clock: Fix missing timespec64 check in pc_clock_settime() As Andrew pointed out, it will make sense that the PTP core checked timespec64 struct's tv_sec and tv_nsec range before calling ptp->info->settime64(). As the man manual of clock_settime() said, if tp.tv_sec is negative or tp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL, which include dynamic clocks which handles PTP clock, and the condition is consistent with timespec64_valid(). As Thomas suggested, timespec64_valid() only check the timespec is valid, but not ensure that the time is in a valid range, so check it ahead using timespec64_valid_strict() in pc_clock_settime() and return -EINVAL if not valid. There are some drivers that use tp->tv_sec and tp->tv_nsec directly to write registers without validity checks and assume that the higher layer has checked it, which is dangerous and will benefit from this, such as hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), and some drivers can remove the checks of itself.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:18 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 29f085345cde24566efb751f39e5d367c381c584 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < e0c966bd3e31911b57ef76cec4c5796ebd88e512 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 673a1c5a2998acbd429d6286e6cad10f17f4f073 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < c8789fbe2bbf75845e45302cba6ffa44e1884d01 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 27abbde44b6e71ee3891de13e1a228aa7ce95bfe (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < a3f169e398215e71361774d13bf91a0101283ac2 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 1ff7247101af723731ea42ed565d54fb8f341264 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < d8794ac20a299b647ba9958f6d657051fc51a540 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.39
Unaffected: 0 , < 2.6.39 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.228 , ≤ 5.10.* (semver)
Unaffected: 5.15.169 , ≤ 5.15.* (semver)
Unaffected: 6.1.114 , ≤ 6.1.* (semver)
Unaffected: 6.6.58 , ≤ 6.6.* (semver)
Unaffected: 6.11.5 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-50195",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:18:04.312116Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-754",
                "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:27:07.870Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:26:50.538Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/time/posix-clock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "29f085345cde24566efb751f39e5d367c381c584",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "e0c966bd3e31911b57ef76cec4c5796ebd88e512",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "673a1c5a2998acbd429d6286e6cad10f17f4f073",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "c8789fbe2bbf75845e45302cba6ffa44e1884d01",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "27abbde44b6e71ee3891de13e1a228aa7ce95bfe",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "a3f169e398215e71361774d13bf91a0101283ac2",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "1ff7247101af723731ea42ed565d54fb8f341264",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            },
            {
              "lessThan": "d8794ac20a299b647ba9958f6d657051fc51a540",
              "status": "affected",
              "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/time/posix-clock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.39"
            },
            {
              "lessThan": "2.6.39",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.228",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.169",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.323",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.285",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.228",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.169",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.114",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.58",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.5",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\n\nAs Andrew pointed out, it will make sense that the PTP core\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\nptp-\u003einfo-\u003esettime64().\n\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\nwhich include dynamic clocks which handles PTP clock, and the condition is\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\nonly check the timespec is valid, but not ensure that the time is\nin a valid range, so check it ahead using timespec64_valid_strict()\nin pc_clock_settime() and return -EINVAL if not valid.\n\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\nwrite registers without validity checks and assume that the higher layer\nhas checked it, which is dangerous and will benefit from this, such as\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\nand some drivers can remove the checks of itself."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The only entry point is the local `clock_settime()`/`clock_settime32()` syscall with a dynamic CLOCKFD clockid derived from an open file descriptor on a `/dev/ptpN` character device. There is no network, adjacent, or remote-peer path into `pc_clock_settime()`.\nAC:L - A single syscall with e.g. `tv_nsec = 1000000000` or `tv_sec = -1` deterministically drives the unvalidated value into the driver callback \u2014 no race, no timing window, no memory-layout or victim-state dependency, and it can be repeated at will.\nPR:L - No capability check exists anywhere on the path; the sole gate is `FMODE_WRITE` on a PTP character device, which is routinely granted to non-root PTP/TSN daemons (linuxptp running with dropped privileges), containers, and appliance workloads in telecom, automotive and cloud deployments. An ordinary unprivileged user holding such a descriptor fully controls the trigger.\nUI:N - The attacker performs the whole sequence on a descriptor they opened themselves with one syscall. No mount, file open, or other action by another user is required.\nS:U - The corrupted state is the kernel\u0027s own PTP/posix-clock objects and the NIC\u0027s PHC managed by the same kernel security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is a missing input-validation check on a value flowing inward to hardware registers and time arithmetic; nothing is read out of bounds, no freed object is reused, and no kernel memory is copied back to userspace, so no read primitive exists.\nI:H - The attacker gains full, arbitrary control over the value programmed into the PTP hardware clock \u2014 the authoritative time base for all hardware timestamping on the interface, for PTP/gPTP synchronization of downstream nodes, and for TSN taprio/ETF gate schedules \u2014 and drivers such as `hclge_ptp_settime()`, `igb_ptp_settime_i210()` and `_rcar_gen4_ptp_settime()` commit it to registers with no checks of their own. Malicious modification of that specific state is a direct, serious integrity consequence for the impacted component, and it also drives undefined arithmetic (`timespec64_to_ns()` overflow, `timecounter_init()`, `do_div()` in `vsc9959_new_base_time()`) in code that assumed a validated input.\nA:H - Programming an out-of-range or negative time into the PHC produces a total, persistent loss of hardware timestamping, PTP synchronization and time-aware-shaper transmission on that interface \u2014 TSN gate schedules recomputed from the poisoned base never open, and the condition can be re-triggered at will so the service cannot recover. The unvalidated value additionally reaches out-of-spec hardware register writes and overflowing kernel time arithmetic on paths that assume validated input."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:42:26.108Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512"
        },
        {
          "url": "https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01"
        },
        {
          "url": "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540"
        }
      ],
      "title": "posix-clock: Fix missing timespec64 check in pc_clock_settime()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50195",
    "datePublished": "2024-11-08T05:54:10.183Z",
    "dateReserved": "2024-10-21T19:36:19.968Z",
    "dateUpdated": "2026-08-05T11:42:26.108Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-50195",
      "date": "2026-09-19",
      "epss": "0.00234",
      "percentile": "0.14625"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "5A3583A3-7039-4012-9458-F67912AED1CA",
                  "versionEndExcluding": "4.19.323",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B5A89369-320F-47FC-8695-56F61F87E4C0",
                  "versionEndExcluding": "5.4.285",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9062315F-AB89-4ABE-8C13-B75927689F66",
                  "versionEndExcluding": "5.10.228",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "18BEDAD6-86F8-457C-952F-C35698B3D07F",
                  "versionEndExcluding": "5.15.169",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "10FD2B3E-C7D9-4A9C-BD64-41877EDF88EB",
                  "versionEndExcluding": "6.1.114",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6B9489BC-825E-4EEE-8D93-F93C801988C8",
                  "versionEndExcluding": "6.6.58",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6E62D61A-F704-44DB-A311-17B7534DA7BC",
                  "versionEndExcluding": "6.11.5",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
                  "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
                  "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
                  "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\n\nAs Andrew pointed out, it will make sense that the PTP core\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\nptp-\u003einfo-\u003esettime64().\n\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\nwhich include dynamic clocks which handles PTP clock, and the condition is\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\nonly check the timespec is valid, but not ensure that the time is\nin a valid range, so check it ahead using timespec64_valid_strict()\nin pc_clock_settime() and return -EINVAL if not valid.\n\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\nwrite registers without validity checks and assume that the higher layer\nhas checked it, which is dangerous and will benefit from this, such as\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\nand some drivers can remove the checks of itself."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: posix-clock: Arreglar la comprobaci\u00f3n timespec64 faltante en pc_clock_settime() Como se\u00f1al\u00f3 Andrew, tendr\u00e1 sentido que el n\u00facleo PTP comprobara el rango tv_sec y tv_nsec de la estructura timespec64 antes de llamar a ptp-\u0026gt;info-\u0026gt;settime64(). Como dec\u00eda el manual de manual de clock_settime(), si tp.tv_sec es negativo o tp.tv_nsec est\u00e1 fuera del rango [0..999,999,999], deber\u00eda devolver EINVAL, que incluye relojes din\u00e1micos que manejan el reloj PTP, y la condici\u00f3n es consistente con timespec64_valid(). Como sugiri\u00f3 Thomas, timespec64_valid() solo comprueba que el timespec sea v\u00e1lido, pero no garantiza que el tiempo est\u00e9 en un rango v\u00e1lido, as\u00ed que compru\u00e9belo con antelaci\u00f3n usando timespec64_valid_strict() en pc_clock_settime() y devuelva -EINVAL si no es v\u00e1lido. Hay algunos controladores que usan tp-\u0026gt;tv_sec y tp-\u0026gt;tv_nsec directamente para escribir registros sin comprobaciones de validez y asumen que la capa superior lo ha comprobado, lo cual es peligroso y se beneficiar\u00e1 de esto, como hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), y algunos controladores pueden eliminar las comprobaciones de s\u00ed mismos."
        }
      ],
      "id": "CVE-2024-50195",
      "lastModified": "2024-11-29T20:26:50.623",
      "metrics": {
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 1.8,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2024-11-08T06:15:16.280",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "tags": [
            "Patch"
          ],
          "url": "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-754"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-19T01:02:18.000Z",
      "cve": "CVE-2024-50195",
      "id": "msrc_CVE-2024-50195",
      "initial_release_date": "2024-11-02T00:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "posix-clock: Fix missing timespec64 check in pc_clock_settime()",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50195.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "kernel/time/posix-clock.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "29f085345cde24566efb751f39e5d367c381c584",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "e0c966bd3e31911b57ef76cec4c5796ebd88e512",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "673a1c5a2998acbd429d6286e6cad10f17f4f073",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c8789fbe2bbf75845e45302cba6ffa44e1884d01",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "27abbde44b6e71ee3891de13e1a228aa7ce95bfe",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a3f169e398215e71361774d13bf91a0101283ac2",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1ff7247101af723731ea42ed565d54fb8f341264",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d8794ac20a299b647ba9958f6d657051fc51a540",
                    "status": "affected",
                    "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "kernel/time/posix-clock.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.39"
                  },
                  {
                    "lessThan": "2.6.39",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.323",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.285",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.228",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.169",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.58",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.11.*",
                    "status": "unaffected",
                    "version": "6.11.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.12",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5A3583A3-7039-4012-9458-F67912AED1CA",
                    "versionEndExcluding": "4.19.323",
                    "versionStartIncluding": "2.6.39",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B5A89369-320F-47FC-8695-56F61F87E4C0",
                    "versionEndExcluding": "5.4.285",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9062315F-AB89-4ABE-8C13-B75927689F66",
                    "versionEndExcluding": "5.10.228",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "18BEDAD6-86F8-457C-952F-C35698B3D07F",
                    "versionEndExcluding": "5.15.169",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "10FD2B3E-C7D9-4A9C-BD64-41877EDF88EB",
                    "versionEndExcluding": "6.1.114",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6B9489BC-825E-4EEE-8D93-F93C801988C8",
                    "versionEndExcluding": "6.6.58",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6E62D61A-F704-44DB-A311-17B7534DA7BC",
                    "versionEndExcluding": "6.11.5",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\n\nAs Andrew pointed out, it will make sense that the PTP core\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\nptp-\u003einfo-\u003esettime64().\n\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\nwhich include dynamic clocks which handles PTP clock, and the condition is\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\nonly check the timespec is valid, but not ensure that the time is\nin a valid range, so check it ahead using timespec64_valid_strict()\nin pc_clock_settime() and return -EINVAL if not valid.\n\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\nwrite registers without validity checks and assume that the higher layer\nhas checked it, which is dangerous and will benefit from this, such as\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\nand some drivers can remove the checks of itself."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: posix-clock: Arreglar la comprobaci\u00f3n timespec64 faltante en pc_clock_settime() Como se\u00f1al\u00f3 Andrew, tendr\u00e1 sentido que el n\u00facleo PTP comprobara el rango tv_sec y tv_nsec de la estructura timespec64 antes de llamar a ptp-\u0026gt;info-\u0026gt;settime64(). Como dec\u00eda el manual de manual de clock_settime(), si tp.tv_sec es negativo o tp.tv_nsec est\u00e1 fuera del rango [0..999,999,999], deber\u00eda devolver EINVAL, que incluye relojes din\u00e1micos que manejan el reloj PTP, y la condici\u00f3n es consistente con timespec64_valid(). Como sugiri\u00f3 Thomas, timespec64_valid() solo comprueba que el timespec sea v\u00e1lido, pero no garantiza que el tiempo est\u00e9 en un rango v\u00e1lido, as\u00ed que compru\u00e9belo con antelaci\u00f3n usando timespec64_valid_strict() en pc_clock_settime() y devuelva -EINVAL si no es v\u00e1lido. Hay algunos controladores que usan tp-\u0026gt;tv_sec y tp-\u0026gt;tv_nsec directamente para escribir registros sin comprobaciones de validez y asumen que la capa superior lo ha comprobado, lo cual es peligroso y se beneficiar\u00e1 de esto, como hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), y algunos controladores pueden eliminar las comprobaciones de s\u00ed mismos."
          }
        ],
        "id": "CVE-2024-50195",
        "lastModified": "2026-08-04T11:21:31.493",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.2,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-50195",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:18:04.312116Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-11-08T06:15:16.280",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-754"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-754"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-14T11:56:22+00:00",
      "cve": "CVE-2024-50195",
      "id": "CVE-2024-50195",
      "initial_release_date": "2024-11-08T00:00:00+00:00",
      "product_status:fixed": "303",
      "product_status:known_affected": "112",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: posix-clock: Fix missing timespec64 check in pc_clock_settime()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50195.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-05T16:59:14Z",
      "cve": "CVE-2024-50195",
      "id": "CVE-2024-50195",
      "initial_release_date": "2024-11-09T03:48:51Z",
      "product_status:known_affected": "676",
      "product_status:known_not_affected": "32",
      "product_status:recommended": "700",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-50195",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50195.json",
      "version": "69"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T22:26:50.538Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 5.5,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-50195",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T20:18:04.312116Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-754",
                    "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T15:21:25.541Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "kernel/time/posix-clock.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "29f085345cde24566efb751f39e5d367c381c584",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "e0c966bd3e31911b57ef76cec4c5796ebd88e512",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "673a1c5a2998acbd429d6286e6cad10f17f4f073",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "c8789fbe2bbf75845e45302cba6ffa44e1884d01",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "27abbde44b6e71ee3891de13e1a228aa7ce95bfe",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "a3f169e398215e71361774d13bf91a0101283ac2",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "1ff7247101af723731ea42ed565d54fb8f341264",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                },
                {
                  "lessThan": "d8794ac20a299b647ba9958f6d657051fc51a540",
                  "status": "affected",
                  "version": "0606f422b453f76c31ab2b1bd52943ff06a2dcf2",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "kernel/time/posix-clock.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.39"
                },
                {
                  "lessThan": "2.6.39",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "4.19.*",
                  "status": "unaffected",
                  "version": "4.19.323",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.285",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.228",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.169",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.114",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.58",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "4.19.323",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.285",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.228",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.169",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.114",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.58",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11.5",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12",
                      "versionStartIncluding": "2.6.39",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\n\nAs Andrew pointed out, it will make sense that the PTP core\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\nptp-\u003einfo-\u003esettime64().\n\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\nwhich include dynamic clocks which handles PTP clock, and the condition is\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\nonly check the timespec is valid, but not ensure that the time is\nin a valid range, so check it ahead using timespec64_valid_strict()\nin pc_clock_settime() and return -EINVAL if not valid.\n\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\nwrite registers without validity checks and assume that the higher layer\nhas checked it, which is dangerous and will benefit from this, such as\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\nand some drivers can remove the checks of itself."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The only entry point is the local `clock_settime()`/`clock_settime32()` syscall with a dynamic CLOCKFD clockid derived from an open file descriptor on a `/dev/ptpN` character device. There is no network, adjacent, or remote-peer path into `pc_clock_settime()`.\nAC:L - A single syscall with e.g. `tv_nsec = 1000000000` or `tv_sec = -1` deterministically drives the unvalidated value into the driver callback \u2014 no race, no timing window, no memory-layout or victim-state dependency, and it can be repeated at will.\nPR:L - No capability check exists anywhere on the path; the sole gate is `FMODE_WRITE` on a PTP character device, which is routinely granted to non-root PTP/TSN daemons (linuxptp running with dropped privileges), containers, and appliance workloads in telecom, automotive and cloud deployments. An ordinary unprivileged user holding such a descriptor fully controls the trigger.\nUI:N - The attacker performs the whole sequence on a descriptor they opened themselves with one syscall. No mount, file open, or other action by another user is required.\nS:U - The corrupted state is the kernel\u0027s own PTP/posix-clock objects and the NIC\u0027s PHC managed by the same kernel security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is a missing input-validation check on a value flowing inward to hardware registers and time arithmetic; nothing is read out of bounds, no freed object is reused, and no kernel memory is copied back to userspace, so no read primitive exists.\nI:H - The attacker gains full, arbitrary control over the value programmed into the PTP hardware clock \u2014 the authoritative time base for all hardware timestamping on the interface, for PTP/gPTP synchronization of downstream nodes, and for TSN taprio/ETF gate schedules \u2014 and drivers such as `hclge_ptp_settime()`, `igb_ptp_settime_i210()` and `_rcar_gen4_ptp_settime()` commit it to registers with no checks of their own. Malicious modification of that specific state is a direct, serious integrity consequence for the impacted component, and it also drives undefined arithmetic (`timespec64_to_ns()` overflow, `timecounter_init()`, `do_div()` in `vsc9959_new_base_time()`) in code that assumed a validated input.\nA:H - Programming an out-of-range or negative time into the PHC produces a total, persistent loss of hardware timestamping, PTP synchronization and time-aware-shaper transmission on that interface \u2014 TSN gate schedules recomputed from the poisoned base never open, and the condition can be re-triggered at will so the service cannot recover. The unvalidated value additionally reaches out-of-spec hardware register writes and overflowing kernel time arithmetic on paths that assume validated input."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:42:26.108Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584"
            },
            {
              "url": "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512"
            },
            {
              "url": "https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073"
            },
            {
              "url": "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01"
            },
            {
              "url": "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe"
            },
            {
              "url": "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2"
            },
            {
              "url": "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264"
            },
            {
              "url": "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540"
            }
          ],
          "title": "posix-clock: Fix missing timespec64 check in pc_clock_settime()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50195",
        "datePublished": "2024-11-08T05:54:10.183Z",
        "dateReserved": "2024-10-21T19:36:19.968Z",
        "dateUpdated": "2026-08-05T11:42:26.108Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.