Vulnerability-Lookup

FKIE_CVE-2024-41057

Vulnerability from fkie_nvd - Published: 2024-07-29 15:15 - 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
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() We got the following issue in our fault injection stress test: ================================================================== BUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600 Read of size 8 at addr ffff888118efc000 by task kworker/u78:0/109 CPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566 Call Trace: <TASK> kasan_report+0x93/0xc0 cachefiles_withdraw_cookie+0x4d9/0x600 fscache_cookie_state_machine+0x5c8/0x1230 fscache_cookie_worker+0x91/0x1c0 process_one_work+0x7fa/0x1800 [...] Allocated by task 117: kmalloc_trace+0x1b3/0x3c0 cachefiles_acquire_volume+0xf3/0x9c0 fscache_create_volume_work+0x97/0x150 process_one_work+0x7fa/0x1800 [...] Freed by task 120301: kfree+0xf1/0x2c0 cachefiles_withdraw_cache+0x3fa/0x920 cachefiles_put_unbind_pincount+0x1f6/0x250 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139/0x230 do_exit+0x87a/0x29b0 [...] ================================================================== Following is the process that triggers the issue: p1 | p2 ------------------------------------------------------------ fscache_begin_lookup fscache_begin_volume_access fscache_cache_is_live(fscache_cache) cachefiles_daemon_release cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache fscache_withdraw_cache fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN); cachefiles_withdraw_objects(cache) fscache_wait_for_objects(fscache) atomic_read(&fscache_cache->object_count) == 0 fscache_perform_lookup cachefiles_lookup_cookie cachefiles_alloc_object refcount_set(&object->ref, 1); object->volume = volume fscache_count_object(vcookie->cache); atomic_inc(&fscache_cache->object_count) cachefiles_withdraw_volumes cachefiles_withdraw_volume fscache_withdraw_volume __cachefiles_free_volume kfree(cachefiles_volume) fscache_cookie_state_machine cachefiles_withdraw_cookie cache = object->volume->cache; // cachefiles_volume UAF !!! After setting FSCACHE_CACHE_IS_WITHDRAWN, wait for all the cookie lookups to complete first, and then wait for fscache_cache->object_count == 0 to avoid the cookie exiting after the volume has been freed and triggering the above issue. Therefore call fscache_withdraw_volume() before calling cachefiles_withdraw_objects(). This way, after setting FSCACHE_CACHE_IS_WITHDRAWN, only the following two cases will occur: 1) fscache_begin_lookup fails in fscache_begin_volume_access(). 2) fscache_withdraw_volume() will ensure that fscache_count_object() has been executed before calling fscache_wait_for_objects().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5d8f805789072ea7fd39504694b7bd17e5f751c4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8de253177112a47c9af157d23ae934779188b4e1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9e67589a4a7b7e5660b524d1d5fe61242bcbcc11	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ef81340401e8a371d6b17f69e76d861920972cfe	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5d8f805789072ea7fd39504694b7bd17e5f751c4	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/8de253177112a47c9af157d23ae934779188b4e1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/9e67589a4a7b7e5660b524d1d5fe61242bcbcc11	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/ef81340401e8a371d6b17f69e76d861920972cfe	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	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/cache.c",
            "fs/cachefiles/volume.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8de253177112a47c9af157d23ae934779188b4e1",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "9e67589a4a7b7e5660b524d1d5fe61242bcbcc11",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "ef81340401e8a371d6b17f69e76d861920972cfe",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "5d8f805789072ea7fd39504694b7bd17e5f751c4",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/cache.c",
            "fs/cachefiles/volume.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DB356B3F-4040-49B4-8BB9-E2643A2E9B13",
              "versionEndExcluding": "6.1.101",
              "versionStartIncluding": "5.17",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "972274A2-D688-4C37-BE42-689B58B4C225",
              "versionEndExcluding": "6.6.42",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "01E300B3-8B39-4A2D-8B03-4631433D3915",
              "versionEndExcluding": "6.9.11",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()\n\nWe got the following issue in our fault injection stress test:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600\nRead of size 8 at addr ffff888118efc000 by task kworker/u78:0/109\n\nCPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566\nCall Trace:\n \u003cTASK\u003e\n kasan_report+0x93/0xc0\n cachefiles_withdraw_cookie+0x4d9/0x600\n fscache_cookie_state_machine+0x5c8/0x1230\n fscache_cookie_worker+0x91/0x1c0\n process_one_work+0x7fa/0x1800\n [...]\n\nAllocated by task 117:\n kmalloc_trace+0x1b3/0x3c0\n cachefiles_acquire_volume+0xf3/0x9c0\n fscache_create_volume_work+0x97/0x150\n process_one_work+0x7fa/0x1800\n [...]\n\nFreed by task 120301:\n kfree+0xf1/0x2c0\n cachefiles_withdraw_cache+0x3fa/0x920\n cachefiles_put_unbind_pincount+0x1f6/0x250\n cachefiles_daemon_release+0x13b/0x290\n __fput+0x204/0xa00\n task_work_run+0x139/0x230\n do_exit+0x87a/0x29b0\n [...]\n==================================================================\n\nFollowing is the process that triggers the issue:\n\n           p1                |             p2\n------------------------------------------------------------\n                              fscache_begin_lookup\n                               fscache_begin_volume_access\n                                fscache_cache_is_live(fscache_cache)\ncachefiles_daemon_release\n cachefiles_put_unbind_pincount\n  cachefiles_daemon_unbind\n   cachefiles_withdraw_cache\n    fscache_withdraw_cache\n     fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN);\n    cachefiles_withdraw_objects(cache)\n    fscache_wait_for_objects(fscache)\n      atomic_read(\u0026fscache_cache-\u003eobject_count) == 0\n                              fscache_perform_lookup\n                               cachefiles_lookup_cookie\n                                cachefiles_alloc_object\n                                 refcount_set(\u0026object-\u003eref, 1);\n                                 object-\u003evolume = volume\n                                 fscache_count_object(vcookie-\u003ecache);\n                                  atomic_inc(\u0026fscache_cache-\u003eobject_count)\n    cachefiles_withdraw_volumes\n     cachefiles_withdraw_volume\n      fscache_withdraw_volume\n      __cachefiles_free_volume\n       kfree(cachefiles_volume)\n                              fscache_cookie_state_machine\n                               cachefiles_withdraw_cookie\n                                cache = object-\u003evolume-\u003ecache;\n                                // cachefiles_volume UAF !!!\n\nAfter setting FSCACHE_CACHE_IS_WITHDRAWN, wait for all the cookie lookups\nto complete first, and then wait for fscache_cache-\u003eobject_count == 0 to\navoid the cookie exiting after the volume has been freed and triggering\nthe above issue. Therefore call fscache_withdraw_volume() before calling\ncachefiles_withdraw_objects().\n\nThis way, after setting FSCACHE_CACHE_IS_WITHDRAWN, only the following two\ncases will occur:\n1) fscache_begin_lookup fails in fscache_begin_volume_access().\n2) fscache_withdraw_volume() will ensure that fscache_count_object() has\n   been executed before calling fscache_wait_for_objects()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() Recibimos el siguiente problema en nuestra prueba de estr\u00e9s de inyecci\u00f3n de fallos: ============ ==================================================== ==== ERROR: KASAN: slab-use-after-free en cachefiles_withdraw_cookie+0x4d9/0x600 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff888118efc000 por tarea kworker/u78:0/109 CPU: 13 PID: 109 Comm: kworker/u78:0 No contaminado 6.8.0-dirty #566 Seguimiento de llamadas:  kasan_report+0x93/0xc0 cachefiles_withdraw_cookie+0x4d9/0x600 fscache_cookie_state_machine+0x5c8/0x1230 fscache_cookie_worker+0x91/0x1c0 Process_one_work+0x7fa/0x1800 [...] Asignado por la tarea 117: kmalloc_trace+0x1b3/0x3c0 cachefiles_acquire_volume+0xf3/0x9c0 fscache_create_volume_work+0x97/0x150 Process_one_work+0x7fa/0x1800 [...] Liberado por la tarea 120301: kfree+0xf1/0x2c0 cachefiles_withdraw_cache+0x3fa/0x92 0 cachefiles_put_unbind_pincount+0x1f6/0x250 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139/0x230 do_exit+0x87a/0x29b0 [...] ================================ ==================================== El siguiente es el proceso que desencadena el problema: p1 | p2 ------------------------------------------------- ----------- fscache_begin_lookup fscache_begin_volume_access fscache_cache_is_live(fscache_cache) cachefiles_daemon_release cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache fscache_withdraw_cache fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN); cachefiles_withdraw_objects(cache) fscache_wait_for_objects(fscache) atomic_read(\u0026amp;fscache_cache-\u0026gt;object_count) == 0 fscache_perform_lookup cachefiles_lookup_cookie cachefiles_alloc_object refcount_set(\u0026amp;object-\u0026gt;ref, 1); objeto-\u0026gt;volumen = volumen fscache_count_object(vcookie-\u0026gt;cache); atomic_inc(\u0026amp;fscache_cache-\u0026gt;object_count) cachefiles_withdraw_volumes cachefiles_withdraw_volume fscache_withdraw_volume __cachefiles_free_volume kfree(cachefiles_volume) fscache_cookie_state_machine cachefiles_withdraw_cookie cache = objeto-\u0026gt;volumen-\u0026gt;cache; // archivos_cach\u00e9_volumen UAF !!! Despu\u00e9s de configurar FSCACHE_CACHE_IS_WITHDRAWN, primero espere a que se completen todas las b\u00fasquedas de cookies y luego espere a que fscache_cache-\u0026gt;object_count == 0 para evitar que la cookie salga despu\u00e9s de que se haya liberado el volumen y desencadene el problema anterior. Por lo tanto, llame a fscache_withdraw_volume() antes de llamar a cachefiles_withdraw_objects(). De esta manera, despu\u00e9s de configurar FSCACHE_CACHE_IS_WITHDRAWN, solo ocurrir\u00e1n los dos casos siguientes: 1) fscache_begin_lookup falla en fscache_begin_volume_access(). 2) fscache_withdraw_volume() garantizar\u00e1 que fscache_count_object() se haya ejecutado antes de llamar a fscache_wait_for_objects()."
    }
  ],
  "id": "CVE-2024-41057",
  "lastModified": "2026-08-04T11:19:23.943",
  "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"
      },
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          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:22:21.821093Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-29T15:15:13.773",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "tags": [
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    }
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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-2024-41057 (GCVE-0-2024-41057)

Vulnerability from cvelistv5 – Published: 2024-07-29 14:57 – Updated: 2026-08-05 11:35

Title

cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()

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 16:22 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/8de253177112a47c9…
https://git.kernel.org/stable/c/9e67589a4a7b7e566…
https://git.kernel.org/stable/c/ef81340401e8a371d…
https://git.kernel.org/stable/c/5d8f805789072ea7f…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 8de253177112a47c9af157d23ae934779188b4e1 (git) Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 9e67589a4a7b7e5660b524d1d5fe61242bcbcc11 (git) Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < ef81340401e8a371d6b17f69e76d861920972cfe (git) Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 5d8f805789072ea7fd39504694b7bd17e5f751c4 (git)
Linux	Linux	Affected: 5.17 Unaffected: 0 , < 5.17 (semver) Unaffected: 6.1.101 , ≤ 6.1.* (semver) Unaffected: 6.6.42 , ≤ 6.6.* (semver) Unaffected: 6.9.11 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

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          "dateUpdated": "2025-11-03T21:59:57.420Z",
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          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-41057",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:22:21.821093Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:32:57.641Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/cache.c",
            "fs/cachefiles/volume.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8de253177112a47c9af157d23ae934779188b4e1",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "9e67589a4a7b7e5660b524d1d5fe61242bcbcc11",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "ef81340401e8a371d6b17f69e76d861920972cfe",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            },
            {
              "lessThan": "5d8f805789072ea7fd39504694b7bd17e5f751c4",
              "status": "affected",
              "version": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cachefiles/cache.c",
            "fs/cachefiles/volume.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.101",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.42",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.11",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()\n\nWe got the following issue in our fault injection stress test:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600\nRead of size 8 at addr ffff888118efc000 by task kworker/u78:0/109\n\nCPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566\nCall Trace:\n \u003cTASK\u003e\n kasan_report+0x93/0xc0\n cachefiles_withdraw_cookie+0x4d9/0x600\n fscache_cookie_state_machine+0x5c8/0x1230\n fscache_cookie_worker+0x91/0x1c0\n process_one_work+0x7fa/0x1800\n [...]\n\nAllocated by task 117:\n kmalloc_trace+0x1b3/0x3c0\n cachefiles_acquire_volume+0xf3/0x9c0\n fscache_create_volume_work+0x97/0x150\n process_one_work+0x7fa/0x1800\n [...]\n\nFreed by task 120301:\n kfree+0xf1/0x2c0\n cachefiles_withdraw_cache+0x3fa/0x920\n cachefiles_put_unbind_pincount+0x1f6/0x250\n cachefiles_daemon_release+0x13b/0x290\n __fput+0x204/0xa00\n task_work_run+0x139/0x230\n do_exit+0x87a/0x29b0\n [...]\n==================================================================\n\nFollowing is the process that triggers the issue:\n\n           p1                |             p2\n------------------------------------------------------------\n                              fscache_begin_lookup\n                               fscache_begin_volume_access\n                                fscache_cache_is_live(fscache_cache)\ncachefiles_daemon_release\n cachefiles_put_unbind_pincount\n  cachefiles_daemon_unbind\n   cachefiles_withdraw_cache\n    fscache_withdraw_cache\n     fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WITHDRAWN);\n    cachefiles_withdraw_objects(cache)\n    fscache_wait_for_objects(fscache)\n      atomic_read(\u0026fscache_cache-\u003eobject_count) == 0\n                              fscache_perform_lookup\n                               cachefiles_lookup_cookie\n                                cachefiles_alloc_object\n                                 refcount_set(\u0026object-\u003eref, 1);\n                                 object-\u003evolume = volume\n                                 fscache_count_object(vcookie-\u003ecache);\n                                  atomic_inc(\u0026fscache_cache-\u003eobject_count)\n    cachefiles_withdraw_volumes\n     cachefiles_withdraw_volume\n      fscache_withdraw_volume\n      __cachefiles_free_volume\n       kfree(cachefiles_volume)\n                              fscache_cookie_state_machine\n                               cachefiles_withdraw_cookie\n                                cache = object-\u003evolume-\u003ecache;\n                                // cachefiles_volume UAF !!!\n\nAfter setting FSCACHE_CACHE_IS_WITHDRAWN, wait for all the cookie lookups\nto complete first, and then wait for fscache_cache-\u003eobject_count == 0 to\navoid the cookie exiting after the volume has been freed and triggering\nthe above issue. Therefore call fscache_withdraw_volume() before calling\ncachefiles_withdraw_objects().\n\nThis way, after setting FSCACHE_CACHE_IS_WITHDRAWN, only the following two\ncases will occur:\n1) fscache_begin_lookup fails in fscache_begin_volume_access().\n2) fscache_withdraw_volume() will ensure that fscache_count_object() has\n   been executed before calling fscache_wait_for_objects()."
        }
      ],
      "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 vulnerable path is reached through local filesystem activity \u2014 `__fscache_use_cookie()` on an fscache-backed mount plus the local `/dev/cachefiles` daemon fd lifecycle. No remote peer data reaches `cachefiles_withdraw_cookie()`, so this requires local access.\nAC:L - The attacker fully drives the racing side by keeping a flood of cookie lookups in flight (repeated opens of uncached files on the fscache-backed mount), so the narrow window between `fscache_wait_for_objects()` and `cachefiles_withdraw_volumes()` is reliably occupied; heap grooming of the 4KB slab is likewise attacker-controlled.\nPR:L - Triggering the lookup side needs only an unprivileged local user with read access to an fscache-enabled netfs or erofs-over-fscache mount \u2014 `__fscache_use_cookie()` is invoked on ordinary file open with no capability check.\nUI:N - No victim action is required; the attacker\u0027s own file opens generate the cookie lookups, and the cache withdrawal is a routine daemon-lifecycle event.\nS:U - The corruption and its consequences are confined to the kernel\u0027s own security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The slab-use-after-free reads `object-\u003evolume-\u003ecache` from a freed kmalloc-4k object, and the resulting pointer is dereferenced repeatedly, letting an attacker who reclaims the slab redirect reads to arbitrary kernel memory and disclose it.\nI:H - The stale `cache` pointer is used for `spin_lock(\u0026cache-\u003eobject_list_lock)` and `override_creds(cache-\u003ecache_cred)` in `cachefiles_begin_secure()`, giving both an arbitrary-address write and attacker-chosen credential installation \u2014 a direct path to privilege escalation.\nA:H - Even unexploited, the use-after-free dereferences garbage in a workqueue context (`fscache_cookie_worker`), producing an oops or panic as shown by the KASAN report."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:35:03.575Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8de253177112a47c9af157d23ae934779188b4e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/9e67589a4a7b7e5660b524d1d5fe61242bcbcc11"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef81340401e8a371d6b17f69e76d861920972cfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d8f805789072ea7fd39504694b7bd17e5f751c4"
        }
      ],
      "title": "cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-41057",
    "datePublished": "2024-07-29T14:57:19.938Z",
    "dateReserved": "2024-07-12T12:17:45.627Z",
    "dateUpdated": "2026-08-05T11:35:03.575Z",
    "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.

Action not permitted

FKIE_CVE-2024-41057

CVE-2024-41057 (GCVE-0-2024-41057)

Tags

Sightings

Nomenclature

Related by attack behaviour