CVE-2022-49364

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to clear dirty inode in f2fs_evict_inode()

As Yanming reported in bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=215904

The kernel message is shown below:

The root cause is: inode node and dnode node share the same nid, so during f2fs_evict_inode(), dnode node truncation will invalidate its NAT entry, so when truncating inode node, it fails due to invalid NAT entry, result in inode is still marked as dirty, fix this issue by clearing dirty for inode and setting SBI_NEED_FSCK flag in filesystem.

output from dump.f2fs: [print_node_info: 354] Node ID [0xf:15] is inode i_nid[0] [0x f : 15]

Detalles técnicos trazas, registros y código del informe original

kernel BUG at fs/f2fs/inode.c:825!
Call Trace:
 evict+0x282/0x4e0
 __dentry_kill+0x2b2/0x4d0
 shrink_dentry_list+0x17c/0x4f0
 shrink_dcache_parent+0x143/0x1e0
 do_one_tree+0x9/0x30
 shrink_dcache_for_umount+0x51/0x120
 generic_shutdown_super+0x5c/0x3a0
 kill_block_super+0x90/0xd0
 kill_f2fs_super+0x225/0x310
 deactivate_locked_super+0x78/0xc0
 cleanup_mnt+0x2b7/0x480
 task_work_run+0xc8/0x150
 exit_to_user_mode_prepare+0x14a/0x150
 syscall_exit_to_user_mode+0x1d/0x40
 do_syscall_64+0x48/0x90

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.26%
Percentil entre todas las CVEs puntuadas: 16
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49364",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
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          "programFiles": [
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          "defaultStatus": "affected"
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  "published": "2025-02-26T07:01:13.043",
  "references": [
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          "value": "NVD-CWE-noinfo"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to clear dirty inode in f2fs_evict_inode()\n\nAs Yanming reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215904\n\nThe kernel message is shown below:\n\nkernel BUG at fs/f2fs/inode.c:825!\nCall Trace:\n evict+0x282/0x4e0\n __dentry_kill+0x2b2/0x4d0\n shrink_dentry_list+0x17c/0x4f0\n shrink_dcache_parent+0x143/0x1e0\n do_one_tree+0x9/0x30\n shrink_dcache_for_umount+0x51/0x120\n generic_shutdown_super+0x5c/0x3a0\n kill_block_super+0x90/0xd0\n kill_f2fs_super+0x225/0x310\n deactivate_locked_super+0x78/0xc0\n cleanup_mnt+0x2b7/0x480\n task_work_run+0xc8/0x150\n exit_to_user_mode_prepare+0x14a/0x150\n syscall_exit_to_user_mode+0x1d/0x40\n do_syscall_64+0x48/0x90\n\nThe root cause is: inode node and dnode node share the same nid,\nso during f2fs_evict_inode(), dnode node truncation will invalidate\nits NAT entry, so when truncating inode node, it fails due to\ninvalid NAT entry, result in inode is still marked as dirty, fix\nthis issue by clearing dirty for inode and setting SBI_NEED_FSCK\nflag in filesystem.\n\noutput from dump.f2fs:\n[print_node_info: 354] Node ID [0xf:15] is inode\ni_nid[0]                      \t\t[0x       f : 15]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corrección para borrar el inodo sucio en f2fs_evict_inode() Como informó Yanming en Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215904 El mensaje del kernel se muestra a continuación: ¡ERROR del kernel en fs/f2fs/inode.c:825! Call Trace: evict+0x282/0x4e0 __dentry_kill+0x2b2/0x4d0 shrink_dentry_list+0x17c/0x4f0 shrink_dcache_parent+0x143/0x1e0 do_one_tree+0x9/0x30 shrink_dcache_for_umount+0x51/0x120 generic_shutdown_super+0x5c/0x3a0 kill_block_super+0x90/0xd0 kill_f2fs_super+0x225/0x310 deactivate_locked_super+0x78/0xc0 cleanup_mnt+0x2b7/0x480 task_work_run+0xc8/0x150 exit_to_user_mode_prepare+0x14a/0x150 syscall_exit_to_user_mode+0x1d/0x40 do_syscall_64+0x48/0x90 The root cause is: inode node and dnode node share the same nid, so during f2fs_evict_inode(), dnode node truncation will invalidate its NAT entry, so when truncating inode node, it fails due to invalid NAT entry, result in inode is still marked as dirty, fix this issue by clearing dirty for inode and setting SBI_NEED_FSCK flag in filesystem. output from dump.f2fs: [print_node_info: 354] Node ID [0xf:15] is inode i_nid[0] [0x f : 15] "
    }
  ],
  "lastModified": "2026-08-15T13:17:20.880",
  "configurations": [
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        {
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