CVE-2024-27395 (GCVE-0-2024-27395)

Vulnerability from cvelistv5 – Published: 2024-05-09 16:37 – Updated: 2026-08-05 11:29
VLAI
Title
net: openvswitch: Fix Use-After-Free in ovs_ct_exit
Summary
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < 2db9a8c0a01fa1c762c1e61a13c212c492752994 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < 589523cf0b384164e445dd5db8d5b1bf97982424 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < 35880c3fa6f8fe281a19975d2992644588ca33d3 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < 9048616553c65e750d43846f225843ed745ec0d4 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < eaa5e164a2110d2fb9e16c8a29e4501882235137 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < edee0758747d7c219e29db9ed1d4eb33e8d32865 (git)
Affected: 11efd5cb04a184eea4f57b68ea63dddd463158d1 , < 5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2 (git)
Create a notification for this product.
Linux Linux Affected: 4.18
Unaffected: 0 , < 4.18 (semver)
Unaffected: 4.19.313 , ≤ 4.19.* (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.158 , ≤ 5.15.* (semver)
Unaffected: 6.1.90 , ≤ 6.1.* (semver)
Unaffected: 6.6.30 , ≤ 6.6.* (semver)
Unaffected: 6.8.9 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:34:52.145Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-27395",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:43:26.319846Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:26.879Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "RUGGEDCOM RST2428P",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T11:51:33.210Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/conntrack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2db9a8c0a01fa1c762c1e61a13c212c492752994",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "589523cf0b384164e445dd5db8d5b1bf97982424",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "35880c3fa6f8fe281a19975d2992644588ca33d3",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "9048616553c65e750d43846f225843ed745ec0d4",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "eaa5e164a2110d2fb9e16c8a29e4501882235137",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "edee0758747d7c219e29db9ed1d4eb33e8d32865",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            },
            {
              "lessThan": "5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2",
              "status": "affected",
              "version": "11efd5cb04a184eea4f57b68ea63dddd463158d1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/conntrack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.313",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.275",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.313",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.275",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.216",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.158",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.90",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.30",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.9",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: Fix Use-After-Free in ovs_ct_exit\n\nSince kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal\nof ovs_ct_limit_exit, is not part of the RCU read critical section, it\nis possible that the RCU grace period will pass during the traversal and\nthe key will be free.\n\nTo prevent this, it should be changed to hlist_for_each_entry_safe."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered through the `ovs_ct_limit` generic netlink family and the network-namespace teardown path (`cleanup_net` \u2192 `ovs_exit_net` \u2192 `ovs_ct_limit_exit`), both of which require local syscall access. No remote packet processing reaches `ovs_ct_limit_exit`.\nAC:L - The attacker controls every input to the race \u2014 chain length (up to 65536 zone entries across 512 buckets), CPU contention to force preemption of the traversal, heap spray to reclaim the freed `struct ovs_ct_limit`, and unlimited free retries by looping namespace create/destroy. Nothing essential to triggering it lies outside attacker influence.\nPR:L - `OVS_CT_LIMIT_CMD_SET` uses `GENL_UNS_ADMIN_PERM`, which checks `ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)`, so an unprivileged user obtains it via `unshare -Urn`; the family is `netnsok` and the module autoloads through `MODULE_ALIAS_GENL_FAMILY` with no capability gate in `ctrl_getfamily()`.\nUI:N - The attacker performs every step alone \u2014 creating the namespace, setting zone limits, and exiting the namespace to drive the teardown. No victim action or interaction is involved.\nS:U - The corruption is confined to kernel slab memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed. This is a standard kernel local privilege-escalation scope.\nC:H - The use-after-free lets the attacker place controlled data in the freed object and steer the traversal to arbitrary kernel addresses, and the resulting arbitrary-free primitive enables controlled UAFs elsewhere that expose arbitrary kernel memory.\nI:H - A reclaimed object supplies an attacker-chosen `next` pointer that is passed to `kfree_rcu()`, yielding an arbitrary-address `kvfree()` plus pointer writes into `rcu_head-\u003efunc`/`-\u003enext` \u2014 a write primitive sufficient for control-flow hijacking and privilege escalation.\nA:H - Dereferencing and then RCU-freeing a stale list pointer corrupts slab metadata and reliably produces a kernel oops or panic even in unsuccessful exploitation attempts, and the path can be re-triggered at will."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:29:29.192Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994"
        },
        {
          "url": "https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424"
        },
        {
          "url": "https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1"
        },
        {
          "url": "https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137"
        },
        {
          "url": "https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865"
        },
        {
          "url": "https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2"
        }
      ],
      "title": "net: openvswitch: Fix Use-After-Free in ovs_ct_exit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-27395",
    "datePublished": "2024-05-09T16:37:15.196Z",
    "dateReserved": "2024-02-25T13:47:42.677Z",
    "dateUpdated": "2026-08-05T11:29:29.192Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-27395",
      "date": "2026-08-05",
      "epss": "0.00244",
      "percentile": "0.15563"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.18\", \"versionEndExcluding\": \"4.19.313\", \"matchCriteriaId\": \"50CBAC7D-95E2-40F3-8EC6-E2B23E7363E6\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.275\", \"matchCriteriaId\": \"5FF6D8DE-C559-4586-86C8-2C6B4420A2C2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.216\", \"matchCriteriaId\": \"A44ABF89-F1BD-4C9A-895D-7596650DCD27\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.158\", \"matchCriteriaId\": \"65D80EF6-76AF-4186-B680-55516EA42EED\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.90\", \"matchCriteriaId\": \"59CEDDCF-5C0D-4939-9CFE-2F4524892DD3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.30\", \"matchCriteriaId\": \"84046DAF-73CF-429D-9BA4-05B658B377B5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.8.9\", \"matchCriteriaId\": \"5F9041E5-8358-4EF7-8F98-B812EDE49612\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*\", \"matchCriteriaId\": \"F850DCEC-E08B-4317-A33B-D2DCF39F601B\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: openvswitch: Fix Use-After-Free in ovs_ct_exit\\n\\nSince kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal\\nof ovs_ct_limit_exit, is not part of the RCU read critical section, it\\nis possible that the RCU grace period will pass during the traversal and\\nthe key will be free.\\n\\nTo prevent this, it should be changed to hlist_for_each_entry_safe.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: openvswitch: Fix Use-After-Free en ovs_ct_exit Dado que kfree_rcu, que se llama en el recorrido hlist_for_each_entry_rcu de ovs_ct_limit_exit, no forma parte de la secci\\u00f3n cr\\u00edtica de lectura de RCU, es posible que el per\\u00edodo de gracia de RCU pasar\\u00e1 durante el recorrido y la clave quedar\\u00e1 libre. Para evitar esto, se debe cambiar a hlist_for_each_entry_safe.\"}]",
      "id": "CVE-2024-27395",
      "lastModified": "2025-01-14T14:27:22.167",
      "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:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-05-14T15:12:27.683",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2025-01-15T00:00:00.000Z",
      "cve": "CVE-2024-27395",
      "id": "msrc_CVE-2024-27395",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: openvswitch: Fix Use-After-Free in ovs_ct_exit",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-27395.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-27395\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-14T15:12:27.683\",\"lastModified\":\"2026-08-04T11:17:42.797\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: openvswitch: Fix Use-After-Free in ovs_ct_exit\\n\\nSince kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal\\nof ovs_ct_limit_exit, is not part of the RCU read critical section, it\\nis possible that the RCU grace period will pass during the traversal and\\nthe key will be free.\\n\\nTo prevent this, it should be changed to hlist_for_each_entry_safe.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: openvswitch: Fix Use-After-Free en ovs_ct_exit Dado que kfree_rcu, que se llama en el recorrido hlist_for_each_entry_rcu de ovs_ct_limit_exit, no forma parte de la secci\u00f3n cr\u00edtica de lectura de RCU, es posible que el per\u00edodo de gracia de RCU pasar\u00e1 durante el recorrido y la clave quedar\u00e1 libre. Para evitar esto, se debe cambiar a hlist_for_each_entry_safe.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/openvswitch/conntrack.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"2db9a8c0a01fa1c762c1e61a13c212c492752994\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"589523cf0b384164e445dd5db8d5b1bf97982424\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"35880c3fa6f8fe281a19975d2992644588ca33d3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"9048616553c65e750d43846f225843ed745ec0d4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"eaa5e164a2110d2fb9e16c8a29e4501882235137\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"edee0758747d7c219e29db9ed1d4eb33e8d32865\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"11efd5cb04a184eea4f57b68ea63dddd463158d1\",\"lessThan\":\"5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/openvswitch/conntrack.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.313\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.275\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.216\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.158\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.90\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.30\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.9\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"V3.1\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T15:43:26.319846Z\",\"id\":\"CVE-2024-27395\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.18\",\"versionEndExcluding\":\"4.19.313\",\"matchCriteriaId\":\"50CBAC7D-95E2-40F3-8EC6-E2B23E7363E6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.275\",\"matchCriteriaId\":\"5FF6D8DE-C559-4586-86C8-2C6B4420A2C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.216\",\"matchCriteriaId\":\"A44ABF89-F1BD-4C9A-895D-7596650DCD27\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.158\",\"matchCriteriaId\":\"65D80EF6-76AF-4186-B680-55516EA42EED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.90\",\"matchCriteriaId\":\"59CEDDCF-5C0D-4939-9CFE-2F4524892DD3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.30\",\"matchCriteriaId\":\"84046DAF-73CF-429D-9BA4-05B658B377B5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.9\",\"matchCriteriaId\":\"5F9041E5-8358-4EF7-8F98-B812EDE49612\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"F850DCEC-E08B-4317-A33B-D2DCF39F601B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:47:49+00:00",
      "cve": "CVE-2024-27395",
      "id": "CVE-2024-27395",
      "initial_release_date": "2024-05-08T00:00:00+00:00",
      "product_status:fixed": "709",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: openvswitch: Fix Use-After-Free in ovs_ct_exit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-27395.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-23T02:07:45Z",
      "cve": "CVE-2024-27395",
      "id": "CVE-2024-27395",
      "initial_release_date": "2024-05-11T02:34:36Z",
      "product_status:known_affected": "525",
      "product_status:known_not_affected": "111",
      "product_status:recommended": "612",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-27395",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-27395.json",
      "version": "88"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:34:52.145Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"RUGGEDCOM RST2428P\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:51:33.210Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-27395\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:43:26.319846Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:16.716Z\"}}], \"cna\": {\"title\": \"net: openvswitch: Fix Use-After-Free in ovs_ct_exit\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerability is triggered through the `ovs_ct_limit` generic netlink family and the network-namespace teardown path (`cleanup_net` \\u2192 `ovs_exit_net` \\u2192 `ovs_ct_limit_exit`), both of which require local syscall access. No remote packet processing reaches `ovs_ct_limit_exit`.\\nAC:L - The attacker controls every input to the race \\u2014 chain length (up to 65536 zone entries across 512 buckets), CPU contention to force preemption of the traversal, heap spray to reclaim the freed `struct ovs_ct_limit`, and unlimited free retries by looping namespace create/destroy. Nothing essential to triggering it lies outside attacker influence.\\nPR:L - `OVS_CT_LIMIT_CMD_SET` uses `GENL_UNS_ADMIN_PERM`, which checks `ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)`, so an unprivileged user obtains it via `unshare -Urn`; the family is `netnsok` and the module autoloads through `MODULE_ALIAS_GENL_FAMILY` with no capability gate in `ctrl_getfamily()`.\\nUI:N - The attacker performs every step alone \\u2014 creating the namespace, setting zone limits, and exiting the namespace to drive the teardown. No victim action or interaction is involved.\\nS:U - The corruption is confined to kernel slab memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed. This is a standard kernel local privilege-escalation scope.\\nC:H - The use-after-free lets the attacker place controlled data in the freed object and steer the traversal to arbitrary kernel addresses, and the resulting arbitrary-free primitive enables controlled UAFs elsewhere that expose arbitrary kernel memory.\\nI:H - A reclaimed object supplies an attacker-chosen `next` pointer that is passed to `kfree_rcu()`, yielding an arbitrary-address `kvfree()` plus pointer writes into `rcu_head-\u003efunc`/`-\u003enext` \\u2014 a write primitive sufficient for control-flow hijacking and privilege escalation.\\nA:H - Dereferencing and then RCU-freeing a stale list pointer corrupts slab metadata and reliably produces a kernel oops or panic even in unsuccessful exploitation attempts, and the path can be re-triggered at will.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"2db9a8c0a01fa1c762c1e61a13c212c492752994\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"589523cf0b384164e445dd5db8d5b1bf97982424\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"35880c3fa6f8fe281a19975d2992644588ca33d3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"9048616553c65e750d43846f225843ed745ec0d4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"eaa5e164a2110d2fb9e16c8a29e4501882235137\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"edee0758747d7c219e29db9ed1d4eb33e8d32865\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"11efd5cb04a184eea4f57b68ea63dddd463158d1\", \"lessThan\": \"5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\", \"versionType\": \"git\"}], \"programFiles\": [\"net/openvswitch/conntrack.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.313\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.275\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.216\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.158\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.90\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.30\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/openvswitch/conntrack.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994\"}, {\"url\": \"https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424\"}, {\"url\": \"https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3\"}, {\"url\": \"https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4\"}, {\"url\": \"https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1\"}, {\"url\": \"https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137\"}, {\"url\": \"https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865\"}, {\"url\": \"https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: openvswitch: Fix Use-After-Free in ovs_ct_exit\\n\\nSince kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal\\nof ovs_ct_limit_exit, is not part of the RCU read critical section, it\\nis possible that the RCU grace period will pass during the traversal and\\nthe key will be free.\\n\\nTo prevent this, it should be changed to hlist_for_each_entry_safe.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.313\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.158\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.90\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.30\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.9\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"4.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:29:29.192Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-27395\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:29:29.192Z\", \"dateReserved\": \"2024-02-25T13:47:42.677Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-09T16:37:15.196Z\", \"assignerShortName\": \"Linux\"}",
      "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.