CVE-2024-53218
Vulnerability from cvelistv5
Published
2024-12-27 13:50
Modified
2025-02-11 15:45
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix race in concurrent f2fs_stop_gc_thread In my test case, concurrent calls to f2fs shutdown report the following stack trace: Oops: general protection fault, probably for non-canonical address 0xc6cfff63bb5513fc: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 678 Comm: f2fs_rep_shutdo Not tainted 6.12.0-rc5-next-20241029-g6fb2fa9805c5-dirty #85 Call Trace: <TASK> ? show_regs+0x8b/0xa0 ? __die_body+0x26/0xa0 ? die_addr+0x54/0x90 ? exc_general_protection+0x24b/0x5c0 ? asm_exc_general_protection+0x26/0x30 ? kthread_stop+0x46/0x390 f2fs_stop_gc_thread+0x6c/0x110 f2fs_do_shutdown+0x309/0x3a0 f2fs_ioc_shutdown+0x150/0x1c0 __f2fs_ioctl+0xffd/0x2ac0 f2fs_ioctl+0x76/0xe0 vfs_ioctl+0x23/0x60 __x64_sys_ioctl+0xce/0xf0 x64_sys_call+0x2b1b/0x4540 do_syscall_64+0xa7/0x240 entry_SYSCALL_64_after_hwframe+0x76/0x7e The root cause is a race condition in f2fs_stop_gc_thread() called from different f2fs shutdown paths: [CPU0] [CPU1] ---------------------- ----------------------- f2fs_stop_gc_thread f2fs_stop_gc_thread gc_th = sbi->gc_thread gc_th = sbi->gc_thread kfree(gc_th) sbi->gc_thread = NULL < gc_th != NULL > kthread_stop(gc_th->f2fs_gc_task) //UAF The commit c7f114d864ac ("f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread()") attempted to fix this issue by using a read semaphore to prevent races between shutdown and remount threads, but it fails to prevent all race conditions. Fix it by converting to write lock of s_umount in f2fs_do_shutdown().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60457ed6c67625c87861f96912b4179dc2293896
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/794fa8792d4eacac191f1cbcc2e81b7369e4662a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b0033dbc48340a1c1c3f12448ba17d6587ca092
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c631207897a9b3d41167ceca58e07f8f94720e42
Impacted products
Vendor Product Version
Linux Linux Version: 7950e9ac638e84518fbdd5c930939ad46a1068c5
Version: 7950e9ac638e84518fbdd5c930939ad46a1068c5
Version: 7950e9ac638e84518fbdd5c930939ad46a1068c5
Version: 7950e9ac638e84518fbdd5c930939ad46a1068c5
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   Linux Linux Version: 4.16
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix race in concurrent f2fs_stop_gc_thread\n\nIn my test case, concurrent calls to f2fs shutdown report the following\nstack trace:\n\n Oops: general protection fault, probably for non-canonical address 0xc6cfff63bb5513fc: 0000 [#1] PREEMPT SMP PTI\n CPU: 0 UID: 0 PID: 678 Comm: f2fs_rep_shutdo Not tainted 6.12.0-rc5-next-20241029-g6fb2fa9805c5-dirty #85\n Call Trace:\n  \u003cTASK\u003e\n  ? show_regs+0x8b/0xa0\n  ? __die_body+0x26/0xa0\n  ? die_addr+0x54/0x90\n  ? exc_general_protection+0x24b/0x5c0\n  ? asm_exc_general_protection+0x26/0x30\n  ? kthread_stop+0x46/0x390\n  f2fs_stop_gc_thread+0x6c/0x110\n  f2fs_do_shutdown+0x309/0x3a0\n  f2fs_ioc_shutdown+0x150/0x1c0\n  __f2fs_ioctl+0xffd/0x2ac0\n  f2fs_ioctl+0x76/0xe0\n  vfs_ioctl+0x23/0x60\n  __x64_sys_ioctl+0xce/0xf0\n  x64_sys_call+0x2b1b/0x4540\n  do_syscall_64+0xa7/0x240\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe root cause is a race condition in f2fs_stop_gc_thread() called from\ndifferent f2fs shutdown paths:\n\n  [CPU0]                       [CPU1]\n  ----------------------       -----------------------\n  f2fs_stop_gc_thread          f2fs_stop_gc_thread\n                                 gc_th = sbi-\u003egc_thread\n    gc_th = sbi-\u003egc_thread\n    kfree(gc_th)\n    sbi-\u003egc_thread = NULL\n                                 \u003c gc_th != NULL \u003e\n                                 kthread_stop(gc_th-\u003ef2fs_gc_task) //UAF\n\nThe commit c7f114d864ac (\"f2fs: fix to avoid use-after-free in\nf2fs_stop_gc_thread()\") attempted to fix this issue by using a read\nsemaphore to prevent races between shutdown and remount threads, but\nit fails to prevent all race conditions.\n\nFix it by converting to write lock of s_umount in f2fs_do_shutdown()."
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    "cveId": "CVE-2024-53218",
    "datePublished": "2024-12-27T13:50:03.556Z",
    "dateReserved": "2024-11-19T17:17:25.024Z",
    "dateUpdated": "2025-02-11T15:45:26.023Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53218\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T14:15:29.840\",\"lastModified\":\"2025-02-11T16:15:42.170\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix race in concurrent f2fs_stop_gc_thread\\n\\nIn my test case, concurrent calls to f2fs shutdown report the following\\nstack trace:\\n\\n Oops: general protection fault, probably for non-canonical address 0xc6cfff63bb5513fc: 0000 [#1] PREEMPT SMP PTI\\n CPU: 0 UID: 0 PID: 678 Comm: f2fs_rep_shutdo Not tainted 6.12.0-rc5-next-20241029-g6fb2fa9805c5-dirty #85\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? show_regs+0x8b/0xa0\\n  ? __die_body+0x26/0xa0\\n  ? die_addr+0x54/0x90\\n  ? exc_general_protection+0x24b/0x5c0\\n  ? asm_exc_general_protection+0x26/0x30\\n  ? kthread_stop+0x46/0x390\\n  f2fs_stop_gc_thread+0x6c/0x110\\n  f2fs_do_shutdown+0x309/0x3a0\\n  f2fs_ioc_shutdown+0x150/0x1c0\\n  __f2fs_ioctl+0xffd/0x2ac0\\n  f2fs_ioctl+0x76/0xe0\\n  vfs_ioctl+0x23/0x60\\n  __x64_sys_ioctl+0xce/0xf0\\n  x64_sys_call+0x2b1b/0x4540\\n  do_syscall_64+0xa7/0x240\\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nThe root cause is a race condition in f2fs_stop_gc_thread() called from\\ndifferent f2fs shutdown paths:\\n\\n  [CPU0]                       [CPU1]\\n  ----------------------       -----------------------\\n  f2fs_stop_gc_thread          f2fs_stop_gc_thread\\n                                 gc_th = sbi-\u003egc_thread\\n    gc_th = sbi-\u003egc_thread\\n    kfree(gc_th)\\n    sbi-\u003egc_thread = NULL\\n                                 \u003c gc_th != NULL \u003e\\n                                 kthread_stop(gc_th-\u003ef2fs_gc_task) //UAF\\n\\nThe commit c7f114d864ac (\\\"f2fs: fix to avoid use-after-free in\\nf2fs_stop_gc_thread()\\\") attempted to fix this issue by using a read\\nsemaphore to prevent races between shutdown and remount threads, but\\nit fails to prevent all race conditions.\\n\\nFix it by converting to write lock of s_umount in f2fs_do_shutdown().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corregir ejecuci\u00f3n en f2fs_stop_gc_thread concurrente En mi caso de prueba, las llamadas concurrentes a f2fs shutdown informan el siguiente seguimiento de pila: Oops: error de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xc6cfff63bb5513fc: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 678 Comm: f2fs_rep_shutdo No contaminado 6.12.0-rc5-next-20241029-g6fb2fa9805c5-dirty #85 Seguimiento de llamada:  ? show_regs+0x8b/0xa0 ? __die_body+0x26/0xa0 ? die_addr+0x54/0x90 ? exc_proteccion_general+0x24b/0x5c0 ? asm_exc_proteccion_general+0x26/0x30 ? kthread_stop+0x46/0x390 f2fs_stop_gc_thread+0x6c/0x110 f2fs_do_shutdown+0x309/0x3a0 f2fs_ioc_shutdown+0x150/0x1c0 __f2fs_ioctl+0xffd/0x2ac0 f2fs_ioctl+0x76/0xe0 vfs_ioctl+0x23/0x60 __x64_sys_ioctl+0xce/0xf0 x64_sys_call+0x2b1b/0x4540 do_syscall_64+0xa7/0x240 entry_SYSCALL_64_after_hwframe+0x76/0x7e La causa ra\u00edz es una condici\u00f3n de ejecuci\u00f3n en f2fs_stop_gc_thread() llamado desde diferentes rutas de apagado de f2fs: [CPU0] [CPU1] ---------------------- ----------------------- f2fs_stop_gc_thread f2fs_stop_gc_thread gc_th = sbi-\u0026gt;gc_thread gc_th = sbi-\u0026gt;gc_thread kfree(gc_th) sbi-\u0026gt;gc_thread = NULL \u0026lt; gc_th != NULL \u0026gt; kthread_stop(gc_th-\u0026gt;f2fs_gc_task) //UAF el commit c7f114d864ac (\\\"f2fs: correcci\u00f3n para evitar el use-after-free en f2fs_stop_gc_thread()\\\") intent\u00f3 corregir este problema al usar un sem\u00e1foro de lectura para evitar ejecuciones entre los subprocesos de apagado y remontaje, pero no logra evitar todas las condiciones de ejecuciones. Arr\u00e9glelo convirtiendo en bloqueo de escritura s_umount en f2fs_do_shutdown().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/60457ed6c67625c87861f96912b4179dc2293896\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/794fa8792d4eacac191f1cbcc2e81b7369e4662a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7b0033dbc48340a1c1c3f12448ba17d6587ca092\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c631207897a9b3d41167ceca58e07f8f94720e42\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-53218\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-11T15:43:11.505838Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-11T15:43:12.957Z\"}}], \"cna\": {\"title\": \"f2fs: fix race in concurrent f2fs_stop_gc_thread\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7950e9ac638e84518fbdd5c930939ad46a1068c5\", \"lessThan\": \"794fa8792d4eacac191f1cbcc2e81b7369e4662a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7950e9ac638e84518fbdd5c930939ad46a1068c5\", \"lessThan\": \"60457ed6c67625c87861f96912b4179dc2293896\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7950e9ac638e84518fbdd5c930939ad46a1068c5\", \"lessThan\": \"c631207897a9b3d41167ceca58e07f8f94720e42\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7950e9ac638e84518fbdd5c930939ad46a1068c5\", \"lessThan\": \"7b0033dbc48340a1c1c3f12448ba17d6587ca092\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/f2fs/file.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.16\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.16\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.64\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/f2fs/file.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/794fa8792d4eacac191f1cbcc2e81b7369e4662a\"}, {\"url\": \"https://git.kernel.org/stable/c/60457ed6c67625c87861f96912b4179dc2293896\"}, {\"url\": \"https://git.kernel.org/stable/c/c631207897a9b3d41167ceca58e07f8f94720e42\"}, {\"url\": \"https://git.kernel.org/stable/c/7b0033dbc48340a1c1c3f12448ba17d6587ca092\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix race in concurrent f2fs_stop_gc_thread\\n\\nIn my test case, concurrent calls to f2fs shutdown report the following\\nstack trace:\\n\\n Oops: general protection fault, probably for non-canonical address 0xc6cfff63bb5513fc: 0000 [#1] PREEMPT SMP PTI\\n CPU: 0 UID: 0 PID: 678 Comm: f2fs_rep_shutdo Not tainted 6.12.0-rc5-next-20241029-g6fb2fa9805c5-dirty #85\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? show_regs+0x8b/0xa0\\n  ? __die_body+0x26/0xa0\\n  ? die_addr+0x54/0x90\\n  ? exc_general_protection+0x24b/0x5c0\\n  ? asm_exc_general_protection+0x26/0x30\\n  ? kthread_stop+0x46/0x390\\n  f2fs_stop_gc_thread+0x6c/0x110\\n  f2fs_do_shutdown+0x309/0x3a0\\n  f2fs_ioc_shutdown+0x150/0x1c0\\n  __f2fs_ioctl+0xffd/0x2ac0\\n  f2fs_ioctl+0x76/0xe0\\n  vfs_ioctl+0x23/0x60\\n  __x64_sys_ioctl+0xce/0xf0\\n  x64_sys_call+0x2b1b/0x4540\\n  do_syscall_64+0xa7/0x240\\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nThe root cause is a race condition in f2fs_stop_gc_thread() called from\\ndifferent f2fs shutdown paths:\\n\\n  [CPU0]                       [CPU1]\\n  ----------------------       -----------------------\\n  f2fs_stop_gc_thread          f2fs_stop_gc_thread\\n                                 gc_th = sbi-\u003egc_thread\\n    gc_th = sbi-\u003egc_thread\\n    kfree(gc_th)\\n    sbi-\u003egc_thread = NULL\\n                                 \u003c gc_th != NULL \u003e\\n                                 kthread_stop(gc_th-\u003ef2fs_gc_task) //UAF\\n\\nThe commit c7f114d864ac (\\\"f2fs: fix to avoid use-after-free in\\nf2fs_stop_gc_thread()\\\") attempted to fix this issue by using a read\\nsemaphore to prevent races between shutdown and remount threads, but\\nit fails to prevent all race conditions.\\n\\nFix it by converting to write lock of s_umount in f2fs_do_shutdown().\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-01-20T06:21:27.964Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-53218\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-11T15:45:26.023Z\", \"dateReserved\": \"2024-11-19T17:17:25.024Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T13:50:03.556Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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