Vulnerability-Lookup

FKIE_CVE-2024-49965

Vulnerability from fkie_nvd - Published: 2024-10-21 18:15 - Updated: 2026-08-04 11:21

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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

Summary

In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove unreasonable unlock in ocfs2_read_blocks Patch series "Misc fixes for ocfs2_read_blocks", v5. This series contains 2 fixes for ocfs2_read_blocks(). The first patch fix the issue reported by syzbot, which detects bad unlock balance in ocfs2_read_blocks(). The second patch fixes an issue reported by Heming Zhao when reviewing above fix. This patch (of 2): There was a lock release before exiting, so remove the unreasonable unlock.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/39a88623af3f1c686bf6db1e677ed865ffe6fccc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3f1ca6ba5452d53c598a45d21267a2c0c221eef3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5245f109b4afb6595360d4c180d483a6d2009a59
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/81aba693b129e82e11bb54f569504d943d018de9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/84543da867c967edffd5065fa910ebf56aaae49d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9753bcb17b36c9add9b32c61766ddf8d2d161911
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c03a82b4a0c935774afa01fd6d128b444fd930a1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/df4f20fc3673cee11abf2c571987a95733cb638d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f55a33fe0fb5274ef185fd61947cf142138958af	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
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          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/buffer_head_io.c"
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              "versionType": "git"
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              "versionType": "git"
            },
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              "status": "affected",
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            },
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              "status": "affected",
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          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "5.4.285",
              "versionType": "semver"
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              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
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            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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              "matchCriteriaId": "24B4F282-4860-4914-A00E-37E79073E119",
              "versionEndExcluding": "4.9",
              "versionStartIncluding": "4.4.204",
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            {
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            {
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            {
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              "versionEndExcluding": "5.15.168",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D01BD22E-ACD1-4618-9D01-6116570BE1EE",
              "versionEndExcluding": "6.1.113",
              "versionStartIncluding": "5.16",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E90B9576-56C4-47BC-AAB0-C5B2D438F5D0",
              "versionEndExcluding": "6.6.55",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "6.10.14",
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              "vulnerable": true
            },
            {
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: remove unreasonable unlock in ocfs2_read_blocks\n\nPatch series \"Misc fixes for ocfs2_read_blocks\", v5.\n\nThis series contains 2 fixes for ocfs2_read_blocks().  The first patch fix\nthe issue reported by syzbot, which detects bad unlock balance in\nocfs2_read_blocks().  The second patch fixes an issue reported by Heming\nZhao when reviewing above fix.\n\n\nThis patch (of 2):\n\nThere was a lock release before exiting, so remove the unreasonable unlock."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ocfs2: eliminar el desbloqueo irrazonable en ocfs2_read_blocks Serie de parches \"Correcciones varias para ocfs2_read_blocks\", v5. Esta serie contiene 2 correcciones para ocfs2_read_blocks(). El primer parche corrige el problema informado por syzbot, que detecta un balance de desbloqueo incorrecto en ocfs2_read_blocks(). El segundo parche corrige un problema informado por Heming Zhao al revisar la correcci\u00f3n anterior. Este parche (de 2): Hubo una liberaci\u00f3n de bloqueo antes de salir, as\u00ed que elimine el desbloqueo irrazonable."
    }
  ],
  "id": "CVE-2024-49965",
  "lastModified": "2026-08-04T11:21:02.847",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-22T13:34:35.371630Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-10-21T18:15:17.593",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/81aba693b129e82e11bb54f569504d943d018de9"
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    },
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    },
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      "url": "https://git.kernel.org/stable/c/df4f20fc3673cee11abf2c571987a95733cb638d"
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      "tags": [
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    },
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  "vulnStatus": "Modified",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-667"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-49965 (GCVE-0-2024-49965)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-08-05 11:40

Title

ocfs2: remove unreasonable unlock in ocfs2_read_blocks

Summary

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 · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:34 UTC

Assigner

Linux mitre root

References

11 references

URL	Tags
https://git.kernel.org/stable/c/5245f109b4afb6595…
https://git.kernel.org/stable/c/9753bcb17b36c9add…
https://git.kernel.org/stable/c/3f1ca6ba5452d53c5…
https://git.kernel.org/stable/c/f55a33fe0fb5274ef…
https://git.kernel.org/stable/c/81aba693b129e82e1…
https://git.kernel.org/stable/c/84543da867c967edf…
https://git.kernel.org/stable/c/df4f20fc3673cee11…
https://git.kernel.org/stable/c/39a88623af3f1c686…
https://git.kernel.org/stable/c/c03a82b4a0c935774…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc , < 5245f109b4afb6595360d4c180d483a6d2009a59 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 9753bcb17b36c9add9b32c61766ddf8d2d161911 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 3f1ca6ba5452d53c598a45d21267a2c0c221eef3 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < f55a33fe0fb5274ef185fd61947cf142138958af (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 81aba693b129e82e11bb54f569504d943d018de9 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 84543da867c967edffd5065fa910ebf56aaae49d (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < df4f20fc3673cee11abf2c571987a95733cb638d (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 39a88623af3f1c686bf6db1e677ed865ffe6fccc (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < c03a82b4a0c935774afa01fd6d128b444fd930a1 (git) Affected: 01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56 (git) Affected: 65cbd1279f4b999d56a838344a30642db24cd215 (git) Affected: 97e1db17bc1ef4c2e1789bc9323c7be44fba53f8 (git) Affected: 4.19.87 , < 4.19.323 (semver) Affected: 4.4.204 , < 4.5 (semver) Affected: 4.9.204 , < 4.10 (semver) Affected: 4.14.157 , < 4.15 (semver)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (semver) Unaffected: 5.4.285 , ≤ 5.4.* (semver) Unaffected: 5.10.227 , ≤ 5.10.* (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49965",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:34:35.371630Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
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        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:38:47.085Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:23:47.003Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "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"
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    ],
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              "versionType": "git"
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              "status": "affected",
              "version": "cf76c78595ca87548ca5e45c862ac9e0949c4687",
              "versionType": "git"
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            {
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            {
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            {
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            {
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            {
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        {
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "4.20"
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            {
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              "status": "unaffected",
              "version": "6.1.113",
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            {
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              "status": "unaffected",
              "version": "6.6.55",
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            },
            {
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            {
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              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "versionEndExcluding": "4.19.323",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.4.285",
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              "negate": false,
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: remove unreasonable unlock in ocfs2_read_blocks\n\nPatch series \"Misc fixes for ocfs2_read_blocks\", v5.\n\nThis series contains 2 fixes for ocfs2_read_blocks().  The first patch fix\nthe issue reported by syzbot, which detects bad unlock balance in\nocfs2_read_blocks().  The second patch fixes an issue reported by Heming\nZhao when reviewing above fix.\n\n\nThis patch (of 2):\n\nThere was a lock release before exiting, so remove the unreasonable unlock."
        }
      ],
      "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"
          },
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            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is reached only through local syscalls against a mounted ocfs2 volume (stat/open/readdir/getxattr/read reaching ocfs2_read_inode_block, dx-leaf, xattr-bucket and extent-map reads) or by mounting a crafted ocfs2 image; no network protocol handler processes attacker data here.\nAC:L - sb_getblk() failure is deterministic for an out-of-range block number supplied by on-disk metadata (grow_buffers() rejects it outright), and is also inducible via memory pressure; the follow-on mutual-exclusion failure has a wait_on_buffer()-wide window with the attacker driving both racing threads.\nPR:L - Any unprivileged local user with access to a mounted ocfs2 filesystem can issue the metadata reads that reach ocfs2_read_blocks() and drive the allocation failure; no capability, and ocfs2 metadata reads are not gated behind CAP_SYS_ADMIN.\nUI:N - On an already-mounted ocfs2 volume (the normal cluster deployment) the attacker triggers the double unlock purely with its own syscalls; no victim action is needed.\nS:U - The corrupted mutex, the ocfs2 metadata cache and the buffer heads all live in the same kernel security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - Losing mutual exclusion lets a second thread run ocfs2_expand_cache() against the already-converted union, copying live rb_node kernel heap pointers into c_block values that surface through mlog/tracepoints, and the resulting metadata-cache corruption is leverageable for further kernel memory disclosure.\nI:H - The spurious unlock releases a mutex held by another task, allowing unserialized rb-tree insertion, ci_num_cached/ci_flags corruption and orphaned kmem_cache objects in a region whose invariants are explicitly unchecked, i.e. attacker-influenced corruption of kernel heap state and of the clustered-uptodate metadata the filesystem trusts.\nA:H - The imbalance produces an immediate lockdep/DEBUG_MUTEXES \"bad unlock balance\" splat (panic under panic_on_warn) and, in production builds, reaches BUG() via mlog_bug_on_msg() in ocfs2_expand_cache(), the duplicate-insert BUG() in __ocfs2_insert_cache_tree(), or the ip_io_mutex assertion in ocfs2_clear_inode() \u2014 all kernel panics."
            }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/9753bcb17b36c9add9b32c61766ddf8d2d161911"
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        {
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/81aba693b129e82e11bb54f569504d943d018de9"
        },
        {
          "url": "https://git.kernel.org/stable/c/84543da867c967edffd5065fa910ebf56aaae49d"
        },
        {
          "url": "https://git.kernel.org/stable/c/df4f20fc3673cee11abf2c571987a95733cb638d"
        },
        {
          "url": "https://git.kernel.org/stable/c/39a88623af3f1c686bf6db1e677ed865ffe6fccc"
        },
        {
          "url": "https://git.kernel.org/stable/c/c03a82b4a0c935774afa01fd6d128b444fd930a1"
        }
      ],
      "title": "ocfs2: remove unreasonable unlock in ocfs2_read_blocks",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49965",
    "datePublished": "2024-10-21T18:02:16.407Z",
    "dateReserved": "2024-10-21T12:17:06.050Z",
    "dateUpdated": "2026-08-05T11:40:44.001Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.