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

Vulnerability from cvelistv5 – Published: 2024-11-08 05:54 – Updated: 2026-05-11 20:47
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
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 (v2.0.3)
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
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)
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)
Create a notification for this product.
Show details on NVD website
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      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-754\"}]}]"
    },
    "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\":{\"id\":\"CVE-2024-50195\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-08T06:15:16.280\",\"lastModified\":\"2026-06-17T08:03:50.620\",\"vulnStatus\":\"Modified\",\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/time/posix-clock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"29f085345cde24566efb751f39e5d367c381c584\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"e0c966bd3e31911b57ef76cec4c5796ebd88e512\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"673a1c5a2998acbd429d6286e6cad10f17f4f073\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"c8789fbe2bbf75845e45302cba6ffa44e1884d01\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"27abbde44b6e71ee3891de13e1a228aa7ce95bfe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"a3f169e398215e71361774d13bf91a0101283ac2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"1ff7247101af723731ea42ed565d54fb8f341264\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0606f422b453f76c31ab2b1bd52943ff06a2dcf2\",\"lessThan\":\"d8794ac20a299b647ba9958f6d657051fc51a540\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/time/posix-clock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.39\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.39\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.323\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.285\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.228\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.169\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.114\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.58\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.5\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T20:18:04.312116Z\",\"id\":\"CVE-2024-50195\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:16:38+00:00",
      "cve": "CVE-2024-50195",
      "id": "CVE-2024-50195",
      "initial_release_date": "2024-11-08T00:00:00+00:00",
      "product_status:fixed": "930",
      "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"
    },
    "vulnrichment": {
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\"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.228\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.169\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.58\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.5\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.39\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:47:16.101Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50195\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:47:16.101Z\", \"dateReserved\": \"2024-10-21T19:36:19.968Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-08T05:54:10.183Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.