Vulnerability-Lookup

FKIE_CVE-2024-41012

Vulnerability from fkie_nvd - Published: 2024-07-23 08:15 - Updated: 2026-08-04 11:19

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823731b224	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823731b224	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
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          "product": "Linux",
          "programFiles": [
            "fs/locks.c"
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.281",
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            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.223",
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              "status": "unaffected",
              "version": "5.15.164",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.42",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.9",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
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              "matchCriteriaId": "12CD4E48-26A1-40B4-AF6A-1CC066193F4C",
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              "versionEndExcluding": "6.9.9",
              "versionStartIncluding": "6.7",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*",
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      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfilelock: Remove locks reliably when fcntl/close race is detected\n\nWhen fcntl_setlk() races with close(), it removes the created lock with\ndo_lock_file_wait().\nHowever, LSMs can allow the first do_lock_file_wait() that created the lock\nwhile denying the second do_lock_file_wait() that tries to remove the lock.\nSeparately, posix_lock_file() could also fail to\nremove a lock due to GFP_KERNEL allocation failure (when splitting a range\nin the middle).\n\nAfter the bug has been triggered, use-after-free reads will occur in\nlock_get_status() when userspace reads /proc/locks. This can likely be used\nto read arbitrary kernel memory, but can\u0027t corrupt kernel memory.\n\nFix it by calling locks_remove_posix() instead, which is designed to\nreliably get rid of POSIX locks associated with the given file and\nfiles_struct and is also used by filp_flush()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: filelock: Elimina bloqueos de manera confiable cuando se detecta fcntl/close race Cuando fcntl_setlk() corre con close(), elimina el bloqueo creado con do_lock_file_wait(). Sin embargo, los LSM pueden permitir el primer do_lock_file_wait() que cre\u00f3 el bloqueo y al mismo tiempo negar el segundo do_lock_file_wait() que intenta eliminar el bloqueo. Por separado, posix_lock_file() tambi\u00e9n podr\u00eda no eliminar un bloqueo debido a un fallo en la asignaci\u00f3n de GFP_KERNEL (al dividir un rango por la mitad). Despu\u00e9s de que se haya activado el error, se producir\u00e1n lecturas de use-after-free en lock_get_status() cuando el espacio de usuario lea /proc/locks. Es probable que esto se pueda usar para leer memoria del kernel arbitraria, pero no puede da\u00f1ar la memoria del kernel. Solucionelo llamando a locks_remove_posix() en su lugar, que est\u00e1 dise\u00f1ado para deshacerse de manera confiable de los bloqueos POSIX asociados con el archivo dado y files_struct y tambi\u00e9n lo usa filp_flush()."
    }
  ],
  "id": "CVE-2024-41012",
  "lastModified": "2026-08-04T11:19:16.620",
  "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": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.0,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-41012",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:25:02.584247Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-23T08:15:01.877",
  "references": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-41012 (GCVE-0-2024-41012)

Vulnerability from cvelistv5 – Published: 2024-07-23 08:06 – Updated: 2026-08-05 11:34

Title

filelock: Remove locks reliably when fcntl/close race is detected

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 2024-09-10 16:25 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/d30ff33040834c3b9…
https://git.kernel.org/stable/c/dc2ce1dfceaa07672…
https://git.kernel.org/stable/c/5661b9c7ec189406c…
https://git.kernel.org/stable/c/52c87ab18c76c14d7…
https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4…
https://git.kernel.org/stable/c/5f5d0799eb0a01d55…
https://git.kernel.org/stable/c/b6d223942c34057fd…
https://git.kernel.org/stable/c/3cad1bc010416c6dd…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < d30ff33040834c3b9eee29740acd92f9c7ba2250 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < dc2ce1dfceaa0767211a9d963ddb029ab21c4235 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < 5661b9c7ec189406c2dde00837aaa4672efb6240 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < 52c87ab18c76c14d7209646ccb3283b3f5d87b22 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < ef8fc41cd6f95f9a4a3470f085aecf350569a0b3 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < 5f5d0799eb0a01d550c21b7894e26b2d9db55763 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < b6d223942c34057fdfd8f149e763fa823731b224 (git) Affected: c293621bbf678a3d85e3ed721c3921c8a670610d , < 3cad1bc010416c6dd780643476bc59ed742436b9 (git)
Linux	Linux	Affected: 2.6.13 Unaffected: 0 , < 2.6.13 (semver) Unaffected: 4.19.319 , ≤ 4.19.* (semver) Unaffected: 5.4.281 , ≤ 5.4.* (semver) Unaffected: 5.10.223 , ≤ 5.10.* (semver) Unaffected: 5.15.164 , ≤ 5.15.* (semver) Unaffected: 6.1.101 , ≤ 6.1.* (semver) Unaffected: 6.6.42 , ≤ 6.6.* (semver) Unaffected: 6.9.9 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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