CVE-2022-49317

Estado: ModificadaMedia (5.5)—

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

f2fs: avoid infinite loop to flush node pages

xfstests/generic/475 can give EIO all the time which give an infinite loop to flush node page like below. Let's avoid it.

Detalles técnicos trazas, registros y código del informe original

[16418.518551] Call Trace:
[16418.518553]  ? dm_submit_bio+0x48/0x400
[16418.518574]  ? submit_bio_checks+0x1ac/0x5a0
[16418.525207]  __submit_bio+0x1a9/0x230
[16418.525210]  ? kmem_cache_alloc+0x29e/0x3c0
[16418.525223]  submit_bio_noacct+0xa8/0x2b0
[16418.525226]  submit_bio+0x4d/0x130
[16418.525238]  __submit_bio+0x49/0x310 [f2fs]
[16418.525339]  ? bio_add_page+0x6a/0x90
[16418.525344]  f2fs_submit_page_bio+0x134/0x1f0 [f2fs]
[16418.525365]  read_node_page+0x125/0x1b0 [f2fs]
[16418.525388]  __get_node_page.part.0+0x58/0x3f0 [f2fs]
[16418.525409]  __get_node_page+0x2f/0x60 [f2fs]
[16418.525431]  f2fs_get_dnode_of_data+0x423/0x860 [f2fs]
[16418.525452]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[16418.525458]  ? __mod_memcg_state.part.0+0x2a/0x30
[16418.525465]  ? __mod_memcg_lruvec_state+0x27/0x40
[16418.525467]  ? __xa_set_mark+0x57/0x70
[16418.525472]  f2fs_do_write_data_page+0x10e/0x7b0 [f2fs]
[16418.525493]  f2fs_write_single_data_page+0x555/0x830 [f2fs]
[16418.525514]  ? sysvec_apic_timer_interrupt+0x4e/0x90
[16418.525518]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[16418.525523]  f2fs_write_cache_pages+0x303/0x880 [f2fs]
[16418.525545]  ? blk_flush_plug_list+0x47/0x100
[16418.525548]  f2fs_write_data_pages+0xfd/0x320 [f2fs]
[16418.525569]  do_writepages+0xd5/0x210
[16418.525648]  filemap_fdatawrite_wbc+0x7d/0xc0
[16418.525655]  filemap_fdatawrite+0x50/0x70
[16418.525658]  f2fs_sync_dirty_inodes+0xa4/0x230 [f2fs]
[16418.525679]  f2fs_write_checkpoint+0x16d/0x1720 [f2fs]
[16418.525699]  ? ttwu_do_wakeup+0x1c/0x160
[16418.525709]  ? ttwu_do_activate+0x6d/0xd0
[16418.525711]  ? __wait_for_common+0x11d/0x150
[16418.525715]  kill_f2fs_super+0xca/0x100 [f2fs]
[16418.525733]  deactivate_locked_super+0x3b/0xb0
[16418.525739]  deactivate_super+0x40/0x50
[16418.525741]  cleanup_mnt+0x139/0x190
[16418.525747]  __cleanup_mnt+0x12/0x20
[16418.525749]  task_work_run+0x6d/0xa0
[16418.525765]  exit_to_user_mode_prepare+0x1ad/0x1b0
[16418.525771]  syscall_exit_to_user_mode+0x27/0x50
[16418.525774]  do_syscall_64+0x48/0xc0
[16418.525776]  entry_SYSCALL_64_after_hwframe+0x44/0xae

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: 0.23%
Percentil entre todas las CVEs puntuadas: 12
Fecha de la puntuación: 5/10/2026

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

CWE-835
CWE-835

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49317",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-49317",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-10-01T19:43:54.982504Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "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
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "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
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "127e670abfa7fa150f6550d620ded930f5bdb4e7",
              "lessThan": "bd47ea5d776d8b524fb6f60de3240f95603901dd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "127e670abfa7fa150f6550d620ded930f5bdb4e7",
              "lessThan": "a7b8618aa2f0f926ce85f2486ac835a85c753ca7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/f2fs/checkpoint.c",
            "fs/f2fs/f2fs.h",
            "fs/f2fs/node.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.18.4",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/f2fs/checkpoint.c",
            "fs/f2fs/f2fs.h",
            "fs/f2fs/node.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:01:08.567",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/a7b8618aa2f0f926ce85f2486ac835a85c753ca7",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bd47ea5d776d8b524fb6f60de3240f95603901dd",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: avoid infinite loop to flush node pages\n\nxfstests/generic/475 can give EIO all the time which give an infinite loop\nto flush node page like below. Let's avoid it.\n\n[16418.518551] Call Trace:\n[16418.518553]  ? dm_submit_bio+0x48/0x400\n[16418.518574]  ? submit_bio_checks+0x1ac/0x5a0\n[16418.525207]  __submit_bio+0x1a9/0x230\n[16418.525210]  ? kmem_cache_alloc+0x29e/0x3c0\n[16418.525223]  submit_bio_noacct+0xa8/0x2b0\n[16418.525226]  submit_bio+0x4d/0x130\n[16418.525238]  __submit_bio+0x49/0x310 [f2fs]\n[16418.525339]  ? bio_add_page+0x6a/0x90\n[16418.525344]  f2fs_submit_page_bio+0x134/0x1f0 [f2fs]\n[16418.525365]  read_node_page+0x125/0x1b0 [f2fs]\n[16418.525388]  __get_node_page.part.0+0x58/0x3f0 [f2fs]\n[16418.525409]  __get_node_page+0x2f/0x60 [f2fs]\n[16418.525431]  f2fs_get_dnode_of_data+0x423/0x860 [f2fs]\n[16418.525452]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20\n[16418.525458]  ? __mod_memcg_state.part.0+0x2a/0x30\n[16418.525465]  ? __mod_memcg_lruvec_state+0x27/0x40\n[16418.525467]  ? __xa_set_mark+0x57/0x70\n[16418.525472]  f2fs_do_write_data_page+0x10e/0x7b0 [f2fs]\n[16418.525493]  f2fs_write_single_data_page+0x555/0x830 [f2fs]\n[16418.525514]  ? sysvec_apic_timer_interrupt+0x4e/0x90\n[16418.525518]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20\n[16418.525523]  f2fs_write_cache_pages+0x303/0x880 [f2fs]\n[16418.525545]  ? blk_flush_plug_list+0x47/0x100\n[16418.525548]  f2fs_write_data_pages+0xfd/0x320 [f2fs]\n[16418.525569]  do_writepages+0xd5/0x210\n[16418.525648]  filemap_fdatawrite_wbc+0x7d/0xc0\n[16418.525655]  filemap_fdatawrite+0x50/0x70\n[16418.525658]  f2fs_sync_dirty_inodes+0xa4/0x230 [f2fs]\n[16418.525679]  f2fs_write_checkpoint+0x16d/0x1720 [f2fs]\n[16418.525699]  ? ttwu_do_wakeup+0x1c/0x160\n[16418.525709]  ? ttwu_do_activate+0x6d/0xd0\n[16418.525711]  ? __wait_for_common+0x11d/0x150\n[16418.525715]  kill_f2fs_super+0xca/0x100 [f2fs]\n[16418.525733]  deactivate_locked_super+0x3b/0xb0\n[16418.525739]  deactivate_super+0x40/0x50\n[16418.525741]  cleanup_mnt+0x139/0x190\n[16418.525747]  __cleanup_mnt+0x12/0x20\n[16418.525749]  task_work_run+0x6d/0xa0\n[16418.525765]  exit_to_user_mode_prepare+0x1ad/0x1b0\n[16418.525771]  syscall_exit_to_user_mode+0x27/0x50\n[16418.525774]  do_syscall_64+0x48/0xc0\n[16418.525776]  entry_SYSCALL_64_after_hwframe+0x44/0xae"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: evitar bucle infinito para vaciar páginas de nodos xfstests/generic/475 puede dar EIO todo el tiempo, lo que da un bucle infinito para vaciar la página de nodos como se muestra a continuación. Vamos a evitarlo. [16418.518551] Seguimiento de llamadas: [16418.518553] ? dm_submit_bio+0x48/0x400 [16418.518574] ? submit_bio_checks+0x1ac/0x5a0 [16418.525207] __submit_bio+0x1a9/0x230 [16418.525210] ? kmem_cache_alloc+0x29e/0x3c0 [16418.525223] submit_bio_noacct+0xa8/0x2b0 [16418.525226] submit_bio+0x4d/0x130 [16418.525238] __submit_bio+0x49/0x310 [f2fs] [16418.525339] ? bio_add_page+0x6a/0x90 [16418.525344] f2fs_submit_page_bio+0x134/0x1f0 [f2fs] [16418.525365] read_node_page+0x125/0x1b0 [f2fs] [16418.525388] __get_node_page.part.0+0x58/0x3f0 [f2fs] [16418.525409] __get_node_page+0x2f/0x60 [f2fs] [16418.525431] f2fs_get_dnode_of_data+0x423/0x860 [f2fs] [16418.525452] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [16418.525458] ? __mod_memcg_state.part.0+0x2a/0x30 [16418.525465] ? __mod_memcg_lruvec_state+0x27/0x40 [16418.525467] ? __xa_set_mark+0x57/0x70 [16418.525472] f2fs_do_write_data_page+0x10e/0x7b0 [f2fs] [16418.525493] f2fs_write_single_data_page+0x555/0x830 [f2fs] [16418.525514] ? sysvec_apic_timer_interrupt+0x4e/0x90 [16418.525518] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [16418.525523] f2fs_write_cache_pages+0x303/0x880 [f2fs] [16418.525545] ? blk_flush_plug_list+0x47/0x100 [16418.525548] f2fs_write_data_pages+0xfd/0x320 [f2fs] [16418.525569] do_writepages+0xd5/0x210 [16418.525648] filemap_fdatawrite_wbc+0x7d/0xc0 [16418.525655] filemap_fdatawrite+0x50/0x70 [16418.525658] f2fs_sync_dirty_inodes+0xa4/0x230 [f2fs] [16418.525679] f2fs_write_checkpoint+0x16d/0x1720 [f2fs] [16418.525699] ? ttwu_do_wakeup+0x1c/0x160 [16418.525709] ? ttwu_do_activate+0x6d/0xd0 [16418.525711] ? __wait_for_common+0x11d/0x150 [16418.525715] kill_f2fs_super+0xca/0x100 [f2fs] [16418.525733] deactivate_locked_super+0x3b/0xb0 [16418.525739] deactivate_super+0x40/0x50 [16418.525741] cleanup_mnt+0x139/0x190 [16418.525747] __cleanup_mnt+0x12/0x20 [16418.525749] task_work_run+0x6d/0xa0 [16418.525765] exit_to_user_mode_prepare+0x1ad/0x1b0 [16418.525771] syscall_exit_to_user_mode+0x27/0x50 [16418.525774] do_syscall_64+0x48/0xc0 [16418.525776] entry_SYSCALL_64_after_hwframe+0x44/0xae"
    }
  ],
  "lastModified": "2026-08-15T13:17:17.890",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5607D6E0-33DF-47C1-83F1-1EF7EC1AB24B",
              "versionEndExcluding": "5.18.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}