CVE-2024-41058 (GCVE-0-2024-41058)

Vulnerability from cvelistv5 – Published: 2024-07-29 14:57 – Updated: 2026-05-11 20:25
VLAI?
Title
cachefiles: fix slab-use-after-free in fscache_withdraw_volume()
Summary
In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix slab-use-after-free in fscache_withdraw_volume() We got the following issue in our fault injection stress test: ================================================================== BUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370 Read of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798 CPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565 Call Trace: kasan_check_range+0xf6/0x1b0 fscache_withdraw_volume+0x2e1/0x370 cachefiles_withdraw_volume+0x31/0x50 cachefiles_withdraw_cache+0x3ad/0x900 cachefiles_put_unbind_pincount+0x1f6/0x250 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139/0x230 Allocated by task 5820: __kmalloc+0x1df/0x4b0 fscache_alloc_volume+0x70/0x600 __fscache_acquire_volume+0x1c/0x610 erofs_fscache_register_volume+0x96/0x1a0 erofs_fscache_register_fs+0x49a/0x690 erofs_fc_fill_super+0x6c0/0xcc0 vfs_get_super+0xa9/0x140 vfs_get_tree+0x8e/0x300 do_new_mount+0x28c/0x580 [...] Freed by task 5820: kfree+0xf1/0x2c0 fscache_put_volume.part.0+0x5cb/0x9e0 erofs_fscache_unregister_fs+0x157/0x1b0 erofs_kill_sb+0xd9/0x1c0 deactivate_locked_super+0xa3/0x100 vfs_get_super+0x105/0x140 vfs_get_tree+0x8e/0x300 do_new_mount+0x28c/0x580 [...] ================================================================== Following is the process that triggers the issue: mount failed | daemon exit ------------------------------------------------------------ deactivate_locked_super cachefiles_daemon_release erofs_kill_sb erofs_fscache_unregister_fs fscache_relinquish_volume __fscache_relinquish_volume fscache_put_volume(fscache_volume, fscache_volume_put_relinquish) zero = __refcount_dec_and_test(&fscache_volume->ref, &ref); cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache cachefiles_withdraw_volumes list_del_init(&volume->cache_link) fscache_free_volume(fscache_volume) cache->ops->free_volume cachefiles_free_volume list_del_init(&cachefiles_volume->cache_link); kfree(fscache_volume) cachefiles_withdraw_volume fscache_withdraw_volume fscache_volume->n_accesses // fscache_volume UAF !!! The fscache_volume in cache->volumes must not have been freed yet, but its reference count may be 0. So use the new fscache_try_get_volume() helper function try to get its reference count. If the reference count of fscache_volume is 0, fscache_put_volume() is freeing it, so wait for it to be removed from cache->volumes. If its reference count is not 0, call cachefiles_withdraw_volume() with reference count protection to avoid the above issue.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 90f17e47f1e209c6a3c92a1d038a0a80c95c460e (git)
Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 9dd7f5663899ea13a6a73216106d9c13c37453e3 (git)
Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 38b88d544216f806d93a273a62ff8ebe82254003 (git)
Affected: fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35 , < 522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36 (git)
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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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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: fix slab-use-after-free in fscache_withdraw_volume()\n\nWe got the following issue in our fault injection stress test:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370\nRead of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798\n\nCPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565\nCall Trace:\n kasan_check_range+0xf6/0x1b0\n fscache_withdraw_volume+0x2e1/0x370\n cachefiles_withdraw_volume+0x31/0x50\n cachefiles_withdraw_cache+0x3ad/0x900\n cachefiles_put_unbind_pincount+0x1f6/0x250\n cachefiles_daemon_release+0x13b/0x290\n __fput+0x204/0xa00\n task_work_run+0x139/0x230\n\nAllocated by task 5820:\n __kmalloc+0x1df/0x4b0\n fscache_alloc_volume+0x70/0x600\n __fscache_acquire_volume+0x1c/0x610\n erofs_fscache_register_volume+0x96/0x1a0\n erofs_fscache_register_fs+0x49a/0x690\n erofs_fc_fill_super+0x6c0/0xcc0\n vfs_get_super+0xa9/0x140\n vfs_get_tree+0x8e/0x300\n do_new_mount+0x28c/0x580\n [...]\n\nFreed by task 5820:\n kfree+0xf1/0x2c0\n fscache_put_volume.part.0+0x5cb/0x9e0\n erofs_fscache_unregister_fs+0x157/0x1b0\n erofs_kill_sb+0xd9/0x1c0\n deactivate_locked_super+0xa3/0x100\n vfs_get_super+0x105/0x140\n vfs_get_tree+0x8e/0x300\n do_new_mount+0x28c/0x580\n [...]\n==================================================================\n\nFollowing is the process that triggers the issue:\n\n        mount failed         |         daemon exit\n------------------------------------------------------------\n deactivate_locked_super        cachefiles_daemon_release\n  erofs_kill_sb\n   erofs_fscache_unregister_fs\n    fscache_relinquish_volume\n     __fscache_relinquish_volume\n      fscache_put_volume(fscache_volume, fscache_volume_put_relinquish)\n       zero = __refcount_dec_and_test(\u0026fscache_volume-\u003eref, \u0026ref);\n                                 cachefiles_put_unbind_pincount\n                                  cachefiles_daemon_unbind\n                                   cachefiles_withdraw_cache\n                                    cachefiles_withdraw_volumes\n                                     list_del_init(\u0026volume-\u003ecache_link)\n       fscache_free_volume(fscache_volume)\n        cache-\u003eops-\u003efree_volume\n         cachefiles_free_volume\n          list_del_init(\u0026cachefiles_volume-\u003ecache_link);\n        kfree(fscache_volume)\n                                     cachefiles_withdraw_volume\n                                      fscache_withdraw_volume\n                                       fscache_volume-\u003en_accesses\n                                       // fscache_volume UAF !!!\n\nThe fscache_volume in cache-\u003evolumes must not have been freed yet, but its\nreference count may be 0. So use the new fscache_try_get_volume() helper\nfunction try to get its reference count.\n\nIf the reference count of fscache_volume is 0, fscache_put_volume() is\nfreeing it, so wait for it to be removed from cache-\u003evolumes.\n\nIf its reference count is not 0, call cachefiles_withdraw_volume() with\nreference count protection to avoid the above issue."
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      "title": "cachefiles: fix slab-use-after-free in fscache_withdraw_volume()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-41058",
    "datePublished": "2024-07-29T14:57:20.894Z",
    "dateReserved": "2024-07-12T12:17:45.627Z",
    "dateUpdated": "2026-05-11T20:25:23.308Z",
    "state": "PUBLISHED"
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      "cve": "CVE-2024-41058",
      "date": "2026-05-24",
      "epss": "0.00019",
      "percentile": "0.0533"
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: fix slab-use-after-free in fscache_withdraw_volume()\\n\\nWe got the following issue in our fault injection stress test:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370\\nRead of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798\\n\\nCPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565\\nCall Trace:\\n kasan_check_range+0xf6/0x1b0\\n fscache_withdraw_volume+0x2e1/0x370\\n cachefiles_withdraw_volume+0x31/0x50\\n cachefiles_withdraw_cache+0x3ad/0x900\\n cachefiles_put_unbind_pincount+0x1f6/0x250\\n cachefiles_daemon_release+0x13b/0x290\\n __fput+0x204/0xa00\\n task_work_run+0x139/0x230\\n\\nAllocated by task 5820:\\n __kmalloc+0x1df/0x4b0\\n fscache_alloc_volume+0x70/0x600\\n __fscache_acquire_volume+0x1c/0x610\\n erofs_fscache_register_volume+0x96/0x1a0\\n erofs_fscache_register_fs+0x49a/0x690\\n erofs_fc_fill_super+0x6c0/0xcc0\\n vfs_get_super+0xa9/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n\\nFreed by task 5820:\\n kfree+0xf1/0x2c0\\n fscache_put_volume.part.0+0x5cb/0x9e0\\n erofs_fscache_unregister_fs+0x157/0x1b0\\n erofs_kill_sb+0xd9/0x1c0\\n deactivate_locked_super+0xa3/0x100\\n vfs_get_super+0x105/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n==================================================================\\n\\nFollowing is the process that triggers the issue:\\n\\n        mount failed         |         daemon exit\\n------------------------------------------------------------\\n deactivate_locked_super        cachefiles_daemon_release\\n  erofs_kill_sb\\n   erofs_fscache_unregister_fs\\n    fscache_relinquish_volume\\n     __fscache_relinquish_volume\\n      fscache_put_volume(fscache_volume, fscache_volume_put_relinquish)\\n       zero = __refcount_dec_and_test(\u0026fscache_volume-\u003eref, \u0026ref);\\n                                 cachefiles_put_unbind_pincount\\n                                  cachefiles_daemon_unbind\\n                                   cachefiles_withdraw_cache\\n                                    cachefiles_withdraw_volumes\\n                                     list_del_init(\u0026volume-\u003ecache_link)\\n       fscache_free_volume(fscache_volume)\\n        cache-\u003eops-\u003efree_volume\\n         cachefiles_free_volume\\n          list_del_init(\u0026cachefiles_volume-\u003ecache_link);\\n        kfree(fscache_volume)\\n                                     cachefiles_withdraw_volume\\n                                      fscache_withdraw_volume\\n                                       fscache_volume-\u003en_accesses\\n                                       // fscache_volume UAF !!!\\n\\nThe fscache_volume in cache-\u003evolumes must not have been freed yet, but its\\nreference count may be 0. So use the new fscache_try_get_volume() helper\\nfunction try to get its reference count.\\n\\nIf the reference count of fscache_volume is 0, fscache_put_volume() is\\nfreeing it, so wait for it to be removed from cache-\u003evolumes.\\n\\nIf its reference count is not 0, call cachefiles_withdraw_volume() with\\nreference count protection to avoid the above issue.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: cachefiles: fix slab-use-after-free in fscache_withdraw_volume() Obtuvimos el siguiente problema en nuestra prueba de estr\\u00e9s de inyecci\\u00f3n defallos: ============ ==================================================== ==== ERROR: KASAN: slab-use-after-free en fscache_withdraw_volume+0x2e1/0x370 Lectura de tama\\u00f1o 4 en la direcci\\u00f3n ffff88810680be08 por tarea ondemand-04-dae/5798 CPU: 0 PID: 5798 Comm: ondemand-04-dae No contaminado 6.8.0-dirty #565 Seguimiento de llamadas: kasan_check_range+0xf6/0x1b0 fscache_withdraw_volume+0x2e1/0x370 cachefiles_withdraw_volume+0x31/0x50 cachefiles_withdraw_cache+0x3ad/0x900 cachefiles_put_unbind_pincount+0x1f6/0x25 0 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139 /0x230 Asignado por la tarea 5820: __kmalloc+0x1df/0x4b0 fscache_alloc_volume+0x70/0x600 __fscache_acquire_volume+0x1c/0x610 erofs_fscache_register_volume+0x96/0x1a0 erofs_fscache_register_fs+0x49a/0 x690 erofs_fc_fill_super+0x6c0/0xcc0 vfs_get_super+0xa9/0x140 vfs_get_tree+0x8e/0x300 do_new_mount+0x28c /0x580 [...] Liberado por la tarea 5820: kfree+0xf1/0x2c0 fscache_put_volume.part.0+0x5cb/0x9e0 erofs_fscache_unregister_fs+0x157/0x1b0 erofs_kill_sb+0xd9/0x1c0 deactivate_locked_super+0xa3/0x100 _super+0x105/0x140 vfs_get_tree+0x8e/ 0x300 do_new_mount+0x28c/0x580 [...] ======================================== =========================== El siguiente es el proceso que desencadena el problema: montaje fallido | salida del daemon ------------------------------------------------ ------------ deactivate_locked_super cachefiles_daemon_release erofs_kill_sb erofs_fscache_unregister_fs fscache_relinquish_volume __fscache_relinquish_volume fscache_put_volume(fscache_volume, fscache_volume_put_relinquish) zero = __refcount_dec_and_test(\u0026amp;fscache_volume-\u0026gt;ref, \u0026amp;ref); cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache cachefiles_withdraw_volumes list_del_init(\u0026amp;volume-\u0026gt;cache_link) fscache_free_volume(fscache_volume) cache-\u0026gt;ops-\u0026gt;free_volume cachefiles_free_volume list_del_init(\u0026amp;cachefiles_volume-\u0026gt;cache_link); kfree(fscache_volume) cachefiles_withdraw_volume fscache_withdraw_volume fscache_volume-\u0026gt;n_accesses // fscache_volume UAF !!! El fscache_volume en cache-\u0026gt;volumes no debe haberse liberado todav\\u00eda, pero su recuento de referencias puede ser 0. Por lo tanto, utilice la nueva funci\\u00f3n auxiliar fscache_try_get_volume() para intentar obtener su recuento de referencias. Si el recuento de referencia de fscache_volume es 0, fscache_put_volume() lo est\\u00e1 liberando, as\\u00ed que espere a que se elimine de cach\\u00e9-\u0026gt;vol\\u00famenes. Si su recuento de referencias no es 0, llame a cachefiles_withdraw_volume() con protecci\\u00f3n de recuento de referencias para evitar el problema anterior.\"}]",
      "id": "CVE-2024-41058",
      "lastModified": "2024-11-21T09:32:09.537",
      "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": "2024-07-29T15:15:13.847",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-41058\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-29T15:15:13.847\",\"lastModified\":\"2025-11-03T22:17:28.983\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: fix slab-use-after-free in fscache_withdraw_volume()\\n\\nWe got the following issue in our fault injection stress test:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370\\nRead of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798\\n\\nCPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565\\nCall Trace:\\n kasan_check_range+0xf6/0x1b0\\n fscache_withdraw_volume+0x2e1/0x370\\n cachefiles_withdraw_volume+0x31/0x50\\n cachefiles_withdraw_cache+0x3ad/0x900\\n cachefiles_put_unbind_pincount+0x1f6/0x250\\n cachefiles_daemon_release+0x13b/0x290\\n __fput+0x204/0xa00\\n task_work_run+0x139/0x230\\n\\nAllocated by task 5820:\\n __kmalloc+0x1df/0x4b0\\n fscache_alloc_volume+0x70/0x600\\n __fscache_acquire_volume+0x1c/0x610\\n erofs_fscache_register_volume+0x96/0x1a0\\n erofs_fscache_register_fs+0x49a/0x690\\n erofs_fc_fill_super+0x6c0/0xcc0\\n vfs_get_super+0xa9/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n\\nFreed by task 5820:\\n kfree+0xf1/0x2c0\\n fscache_put_volume.part.0+0x5cb/0x9e0\\n erofs_fscache_unregister_fs+0x157/0x1b0\\n erofs_kill_sb+0xd9/0x1c0\\n deactivate_locked_super+0xa3/0x100\\n vfs_get_super+0x105/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n==================================================================\\n\\nFollowing is the process that triggers the issue:\\n\\n        mount failed         |         daemon exit\\n------------------------------------------------------------\\n deactivate_locked_super        cachefiles_daemon_release\\n  erofs_kill_sb\\n   erofs_fscache_unregister_fs\\n    fscache_relinquish_volume\\n     __fscache_relinquish_volume\\n      fscache_put_volume(fscache_volume, fscache_volume_put_relinquish)\\n       zero = __refcount_dec_and_test(\u0026fscache_volume-\u003eref, \u0026ref);\\n                                 cachefiles_put_unbind_pincount\\n                                  cachefiles_daemon_unbind\\n                                   cachefiles_withdraw_cache\\n                                    cachefiles_withdraw_volumes\\n                                     list_del_init(\u0026volume-\u003ecache_link)\\n       fscache_free_volume(fscache_volume)\\n        cache-\u003eops-\u003efree_volume\\n         cachefiles_free_volume\\n          list_del_init(\u0026cachefiles_volume-\u003ecache_link);\\n        kfree(fscache_volume)\\n                                     cachefiles_withdraw_volume\\n                                      fscache_withdraw_volume\\n                                       fscache_volume-\u003en_accesses\\n                                       // fscache_volume UAF !!!\\n\\nThe fscache_volume in cache-\u003evolumes must not have been freed yet, but its\\nreference count may be 0. So use the new fscache_try_get_volume() helper\\nfunction try to get its reference count.\\n\\nIf the reference count of fscache_volume is 0, fscache_put_volume() is\\nfreeing it, so wait for it to be removed from cache-\u003evolumes.\\n\\nIf its reference count is not 0, call cachefiles_withdraw_volume() with\\nreference count protection to avoid the above issue.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: cachefiles: fix slab-use-after-free in fscache_withdraw_volume() Obtuvimos el siguiente problema en nuestra prueba de estr\u00e9s de inyecci\u00f3n defallos: ============ ==================================================== ==== ERROR: KASAN: slab-use-after-free en fscache_withdraw_volume+0x2e1/0x370 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff88810680be08 por tarea ondemand-04-dae/5798 CPU: 0 PID: 5798 Comm: ondemand-04-dae No contaminado 6.8.0-dirty #565 Seguimiento de llamadas: kasan_check_range+0xf6/0x1b0 fscache_withdraw_volume+0x2e1/0x370 cachefiles_withdraw_volume+0x31/0x50 cachefiles_withdraw_cache+0x3ad/0x900 cachefiles_put_unbind_pincount+0x1f6/0x25 0 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139 /0x230 Asignado por la tarea 5820: __kmalloc+0x1df/0x4b0 fscache_alloc_volume+0x70/0x600 __fscache_acquire_volume+0x1c/0x610 erofs_fscache_register_volume+0x96/0x1a0 erofs_fscache_register_fs+0x49a/0 x690 erofs_fc_fill_super+0x6c0/0xcc0 vfs_get_super+0xa9/0x140 vfs_get_tree+0x8e/0x300 do_new_mount+0x28c /0x580 [...] Liberado por la tarea 5820: kfree+0xf1/0x2c0 fscache_put_volume.part.0+0x5cb/0x9e0 erofs_fscache_unregister_fs+0x157/0x1b0 erofs_kill_sb+0xd9/0x1c0 deactivate_locked_super+0xa3/0x100 _super+0x105/0x140 vfs_get_tree+0x8e/ 0x300 do_new_mount+0x28c/0x580 [...] ======================================== =========================== El siguiente es el proceso que desencadena el problema: montaje fallido | salida del daemon ------------------------------------------------ ------------ deactivate_locked_super cachefiles_daemon_release erofs_kill_sb erofs_fscache_unregister_fs fscache_relinquish_volume __fscache_relinquish_volume fscache_put_volume(fscache_volume, fscache_volume_put_relinquish) zero = __refcount_dec_and_test(\u0026amp;fscache_volume-\u0026gt;ref, \u0026amp;ref); cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache cachefiles_withdraw_volumes list_del_init(\u0026amp;volume-\u0026gt;cache_link) fscache_free_volume(fscache_volume) cache-\u0026gt;ops-\u0026gt;free_volume cachefiles_free_volume list_del_init(\u0026amp;cachefiles_volume-\u0026gt;cache_link); kfree(fscache_volume) cachefiles_withdraw_volume fscache_withdraw_volume fscache_volume-\u0026gt;n_accesses // fscache_volume UAF !!! El fscache_volume en cache-\u0026gt;volumes no debe haberse liberado todav\u00eda, pero su recuento de referencias puede ser 0. Por lo tanto, utilice la nueva funci\u00f3n auxiliar fscache_try_get_volume() para intentar obtener su recuento de referencias. Si el recuento de referencia de fscache_volume es 0, fscache_put_volume() lo est\u00e1 liberando, as\u00ed que espere a que se elimine de cach\u00e9-\u0026gt;vol\u00famenes. Si su recuento de referencias no es 0, llame a cachefiles_withdraw_volume() con protecci\u00f3n de recuento de referencias para evitar el problema anterior.\"}],\"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}]},\"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\":\"5.17\",\"versionEndExcluding\":\"6.1.101\",\"matchCriteriaId\":\"DB356B3F-4040-49B4-8BB9-E2643A2E9B13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.42\",\"matchCriteriaId\":\"972274A2-D688-4C37-BE42-689B58B4C225\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.11\",\"matchCriteriaId\":\"01E300B3-8B39-4A2D-8B03-4631433D3915\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:46:51.695Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-41058\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T16:22:18.541006Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:20.247Z\"}}], \"cna\": {\"title\": \"cachefiles: fix slab-use-after-free in fscache_withdraw_volume()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35\", \"lessThan\": \"90f17e47f1e209c6a3c92a1d038a0a80c95c460e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35\", \"lessThan\": \"9dd7f5663899ea13a6a73216106d9c13c37453e3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35\", \"lessThan\": \"38b88d544216f806d93a273a62ff8ebe82254003\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35\", \"lessThan\": \"522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/cachefiles/cache.c\", \"include/trace/events/fscache.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.101\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.42\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/cachefiles/cache.c\", \"include/trace/events/fscache.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/90f17e47f1e209c6a3c92a1d038a0a80c95c460e\"}, {\"url\": \"https://git.kernel.org/stable/c/9dd7f5663899ea13a6a73216106d9c13c37453e3\"}, {\"url\": \"https://git.kernel.org/stable/c/38b88d544216f806d93a273a62ff8ebe82254003\"}, {\"url\": \"https://git.kernel.org/stable/c/522018a0de6b6fcce60c04f86dfc5f0e4b6a1b36\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncachefiles: fix slab-use-after-free in fscache_withdraw_volume()\\n\\nWe got the following issue in our fault injection stress test:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370\\nRead of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798\\n\\nCPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565\\nCall Trace:\\n kasan_check_range+0xf6/0x1b0\\n fscache_withdraw_volume+0x2e1/0x370\\n cachefiles_withdraw_volume+0x31/0x50\\n cachefiles_withdraw_cache+0x3ad/0x900\\n cachefiles_put_unbind_pincount+0x1f6/0x250\\n cachefiles_daemon_release+0x13b/0x290\\n __fput+0x204/0xa00\\n task_work_run+0x139/0x230\\n\\nAllocated by task 5820:\\n __kmalloc+0x1df/0x4b0\\n fscache_alloc_volume+0x70/0x600\\n __fscache_acquire_volume+0x1c/0x610\\n erofs_fscache_register_volume+0x96/0x1a0\\n erofs_fscache_register_fs+0x49a/0x690\\n erofs_fc_fill_super+0x6c0/0xcc0\\n vfs_get_super+0xa9/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n\\nFreed by task 5820:\\n kfree+0xf1/0x2c0\\n fscache_put_volume.part.0+0x5cb/0x9e0\\n erofs_fscache_unregister_fs+0x157/0x1b0\\n erofs_kill_sb+0xd9/0x1c0\\n deactivate_locked_super+0xa3/0x100\\n vfs_get_super+0x105/0x140\\n vfs_get_tree+0x8e/0x300\\n do_new_mount+0x28c/0x580\\n [...]\\n==================================================================\\n\\nFollowing is the process that triggers the issue:\\n\\n        mount failed         |         daemon exit\\n------------------------------------------------------------\\n deactivate_locked_super        cachefiles_daemon_release\\n  erofs_kill_sb\\n   erofs_fscache_unregister_fs\\n    fscache_relinquish_volume\\n     __fscache_relinquish_volume\\n      fscache_put_volume(fscache_volume, fscache_volume_put_relinquish)\\n       zero = __refcount_dec_and_test(\u0026fscache_volume-\u003eref, \u0026ref);\\n                                 cachefiles_put_unbind_pincount\\n                                  cachefiles_daemon_unbind\\n                                   cachefiles_withdraw_cache\\n                                    cachefiles_withdraw_volumes\\n                                     list_del_init(\u0026volume-\u003ecache_link)\\n       fscache_free_volume(fscache_volume)\\n        cache-\u003eops-\u003efree_volume\\n         cachefiles_free_volume\\n          list_del_init(\u0026cachefiles_volume-\u003ecache_link);\\n        kfree(fscache_volume)\\n                                     cachefiles_withdraw_volume\\n                                      fscache_withdraw_volume\\n                                       fscache_volume-\u003en_accesses\\n                                       // fscache_volume UAF !!!\\n\\nThe fscache_volume in cache-\u003evolumes must not have been freed yet, but its\\nreference count may be 0. So use the new fscache_try_get_volume() helper\\nfunction try to get its reference count.\\n\\nIf the reference count of fscache_volume is 0, fscache_put_volume() is\\nfreeing it, so wait for it to be removed from cache-\u003evolumes.\\n\\nIf its reference count is not 0, call cachefiles_withdraw_volume() with\\nreference count protection to avoid the above issue.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:11:05.806Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-41058\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:11:05.806Z\", \"dateReserved\": \"2024-07-12T12:17:45.627Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-29T14:57:20.894Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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

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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.