CVE-2024-57940 (GCVE-0-2024-57940)

Vulnerability from cvelistv5 – Published: 2025-01-21 12:18 – Updated: 2025-11-03 20:56
VLAI?
Title
exfat: fix the infinite loop in exfat_readdir()
Summary
In the Linux kernel, the following vulnerability has been resolved: exfat: fix the infinite loop in exfat_readdir() If the file system is corrupted so that a cluster is linked to itself in the cluster chain, and there is an unused directory entry in the cluster, 'dentry' will not be incremented, causing condition 'dentry < max_dentries' unable to prevent an infinite loop. This infinite loop causes s_lock not to be released, and other tasks will hang, such as exfat_sync_fs(). This commit stops traversing the cluster chain when there is unused directory entry in the cluster to avoid this infinite loop.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < d8cfbb8723bd3d3222f360227a1cc15227189ca6 (git)
Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < 28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17 (git)
Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < 31beabd0f47f8c3ed9965ba861c9e5b252d4920a (git)
Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < dc1d7afceb982e8f666e70a582e6b5aa806de063 (git)
Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < d9ea94f5cd117d56e573696d0045ab3044185a15 (git)
Affected: ca06197382bde0a3bc20215595d1c9ce20c6e341 , < fee873761bd978d077d8c55334b4966ac4cb7b59 (git)
Create a notification for this product.
    Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.234 , ≤ 5.10.* (semver)
Unaffected: 5.15.177 , ≤ 5.15.* (semver)
Unaffected: 6.1.125 , ≤ 6.1.* (semver)
Unaffected: 6.6.72 , ≤ 6.6.* (semver)
Unaffected: 6.12.10 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:56:09.764Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/exfat/dir.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d8cfbb8723bd3d3222f360227a1cc15227189ca6",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            },
            {
              "lessThan": "28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            },
            {
              "lessThan": "31beabd0f47f8c3ed9965ba861c9e5b252d4920a",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            },
            {
              "lessThan": "dc1d7afceb982e8f666e70a582e6b5aa806de063",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            },
            {
              "lessThan": "d9ea94f5cd117d56e573696d0045ab3044185a15",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            },
            {
              "lessThan": "fee873761bd978d077d8c55334b4966ac4cb7b59",
              "status": "affected",
              "version": "ca06197382bde0a3bc20215595d1c9ce20c6e341",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/exfat/dir.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.234",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.177",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.125",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.72",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.234",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.177",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.125",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.72",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.10",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix the infinite loop in exfat_readdir()\n\nIf the file system is corrupted so that a cluster is linked to\nitself in the cluster chain, and there is an unused directory\nentry in the cluster, \u0027dentry\u0027 will not be incremented, causing\ncondition \u0027dentry \u003c max_dentries\u0027 unable to prevent an infinite\nloop.\n\nThis infinite loop causes s_lock not to be released, and other\ntasks will hang, such as exfat_sync_fs().\n\nThis commit stops traversing the cluster chain when there is unused\ndirectory entry in the cluster to avoid this infinite loop."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:07:07.089Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d8cfbb8723bd3d3222f360227a1cc15227189ca6"
        },
        {
          "url": "https://git.kernel.org/stable/c/28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17"
        },
        {
          "url": "https://git.kernel.org/stable/c/31beabd0f47f8c3ed9965ba861c9e5b252d4920a"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc1d7afceb982e8f666e70a582e6b5aa806de063"
        },
        {
          "url": "https://git.kernel.org/stable/c/d9ea94f5cd117d56e573696d0045ab3044185a15"
        },
        {
          "url": "https://git.kernel.org/stable/c/fee873761bd978d077d8c55334b4966ac4cb7b59"
        }
      ],
      "title": "exfat: fix the infinite loop in exfat_readdir()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57940",
    "datePublished": "2025-01-21T12:18:09.150Z",
    "dateReserved": "2025-01-19T11:50:08.378Z",
    "dateUpdated": "2025-11-03T20:56:09.764Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.