CVE-2022-49428 (GCVE-0-2022-49428)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:12 – Updated: 2025-05-04 08:37
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on inline_dots inode As Wenqing reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215765 It will cause a kernel panic with steps: - mkdir mnt - mount tmp40.img mnt - ls mnt folio_mark_dirty+0x33/0x50 f2fs_add_regular_entry+0x541/0xad0 [f2fs] f2fs_add_dentry+0x6c/0xb0 [f2fs] f2fs_do_add_link+0x182/0x230 [f2fs] __recover_dot_dentries+0x2d6/0x470 [f2fs] f2fs_lookup+0x5af/0x6a0 [f2fs] __lookup_slow+0xac/0x200 lookup_slow+0x45/0x70 walk_component+0x16c/0x250 path_lookupat+0x8b/0x1f0 filename_lookup+0xef/0x250 user_path_at_empty+0x46/0x70 vfs_statx+0x98/0x190 __do_sys_newlstat+0x41/0x90 __x64_sys_newlstat+0x1a/0x30 do_syscall_64+0x37/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae The root cause is for special file: e.g. character, block, fifo or socket file, f2fs doesn't assign address space operations pointer array for mapping->a_ops field, so, in a fuzzed image, if inline_dots flag was tagged in special file, during lookup(), when f2fs runs into __recover_dot_dentries(), it will cause NULL pointer access once f2fs_add_regular_entry() calls a_ops->set_dirty_page().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 510022a85839a8409d1e6a519bb86ce71a84f30a , < 250e5a6be52a6b9d82fe91976c83cc158868b4e9 (git)
Affected: 510022a85839a8409d1e6a519bb86ce71a84f30a , < 34f48ce5d5936eea33e3b6415403e57eb84aff97 (git)
Affected: 510022a85839a8409d1e6a519bb86ce71a84f30a , < 2f46160d0a19b13bfe96c0dd50eed5c5d253ab7a (git)
Affected: 510022a85839a8409d1e6a519bb86ce71a84f30a , < 12662d19467b391b5b509ac5e9ab4f583c6dde16 (git)
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    Linux Linux Affected: 4.1
Unaffected: 0 , < 4.1 (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/namei.c"
          ],
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to do sanity check on inline_dots inode\n\nAs Wenqing reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215765\n\nIt will cause a kernel panic with steps:\n- mkdir mnt\n- mount tmp40.img mnt\n- ls mnt\n\nfolio_mark_dirty+0x33/0x50\nf2fs_add_regular_entry+0x541/0xad0 [f2fs]\nf2fs_add_dentry+0x6c/0xb0 [f2fs]\nf2fs_do_add_link+0x182/0x230 [f2fs]\n__recover_dot_dentries+0x2d6/0x470 [f2fs]\nf2fs_lookup+0x5af/0x6a0 [f2fs]\n__lookup_slow+0xac/0x200\nlookup_slow+0x45/0x70\nwalk_component+0x16c/0x250\npath_lookupat+0x8b/0x1f0\nfilename_lookup+0xef/0x250\nuser_path_at_empty+0x46/0x70\nvfs_statx+0x98/0x190\n__do_sys_newlstat+0x41/0x90\n__x64_sys_newlstat+0x1a/0x30\ndo_syscall_64+0x37/0xb0\nentry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root cause is for special file: e.g. character, block, fifo or\nsocket file, f2fs doesn\u0027t assign address space operations pointer array\nfor mapping-\u003ea_ops field, so, in a fuzzed image, if inline_dots flag was\ntagged in special file, during lookup(), when f2fs runs into\n__recover_dot_dentries(), it will cause NULL pointer access once\nf2fs_add_regular_entry() calls a_ops-\u003eset_dirty_page()."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:37:27.663Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/12662d19467b391b5b509ac5e9ab4f583c6dde16"
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      ],
      "title": "f2fs: fix to do sanity check on inline_dots inode",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49428",
    "datePublished": "2025-02-26T02:12:48.149Z",
    "dateReserved": "2025-02-26T02:08:31.569Z",
    "dateUpdated": "2025-05-04T08:37:27.663Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49428\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:19.290\",\"lastModified\":\"2025-10-22T17:27:38.403\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to do sanity check on inline_dots inode\\n\\nAs Wenqing reported in bugzilla:\\n\\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215765\\n\\nIt will cause a kernel panic with steps:\\n- mkdir mnt\\n- mount tmp40.img mnt\\n- ls mnt\\n\\nfolio_mark_dirty+0x33/0x50\\nf2fs_add_regular_entry+0x541/0xad0 [f2fs]\\nf2fs_add_dentry+0x6c/0xb0 [f2fs]\\nf2fs_do_add_link+0x182/0x230 [f2fs]\\n__recover_dot_dentries+0x2d6/0x470 [f2fs]\\nf2fs_lookup+0x5af/0x6a0 [f2fs]\\n__lookup_slow+0xac/0x200\\nlookup_slow+0x45/0x70\\nwalk_component+0x16c/0x250\\npath_lookupat+0x8b/0x1f0\\nfilename_lookup+0xef/0x250\\nuser_path_at_empty+0x46/0x70\\nvfs_statx+0x98/0x190\\n__do_sys_newlstat+0x41/0x90\\n__x64_sys_newlstat+0x1a/0x30\\ndo_syscall_64+0x37/0xb0\\nentry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nThe root cause is for special file: e.g. character, block, fifo or\\nsocket file, f2fs doesn\u0027t assign address space operations pointer array\\nfor mapping-\u003ea_ops field, so, in a fuzzed image, if inline_dots flag was\\ntagged in special file, during lookup(), when f2fs runs into\\n__recover_dot_dentries(), it will cause NULL pointer access once\\nf2fs_add_regular_entry() calls a_ops-\u003eset_dirty_page().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para realizar una comprobaci\u00f3n de cordura en el inodo inline_dots Como inform\u00f3 Wenqing en bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215765 Provocar\u00e1 un p\u00e1nico del kernel con los pasos: - mkdir mnt - mount tmp40.img mnt - ls mnt folio_mark_dirty+0x33/0x50 f2fs_add_regular_entry+0x541/0xad0 [f2fs] f2fs_add_dentry+0x6c/0xb0 [f2fs] f2fs_do_add_link+0x182/0x230 [f2fs] __recover_dot_dentries+0x2d6/0x470 [f2fs] f2fs_lookup+0x5af/0x6a0 [f2fs] __lookup_slow+0xac/0x200 lookup_slow+0x45/0x70 walk_component+0x16c/0x250 path_lookupat+0x8b/0x1f0 filename_lookup+0xef/0x250 user_path_at_empty+0x46/0x70 vfs_statx+0x98/0x190 __do_sys_newlstat+0x41/0x90 __x64_sys_newlstat+0x1a/0x30 do_syscall_64+0x37/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae La causa ra\u00edz es un archivo especial: por ejemplo, un archivo de caracteres, bloques, FIFO o socket. f2fs no asigna una matriz de punteros de operaciones de espacio de direcciones para el campo mapping-\u0026gt;a_ops, por lo que, en una imagen difusa, si el indicador inline_dots fue etiquetado en un archivo especial, durante lookup(), cuando f2fs se ejecuta en __recover_dot_dentries(), provocar\u00e1 un acceso al puntero NULL una vez que f2fs_add_regular_entry() llame a a_ops-\u0026gt;set_dirty_page().\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.1\",\"versionEndExcluding\":\"5.15.46\",\"matchCriteriaId\":\"90E4FF6F-AB0A-4194-BCDB-8284121892A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"15E2DD33-2255-4B76-9C15-04FF8CBAB252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/12662d19467b391b5b509ac5e9ab4f583c6dde16\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/250e5a6be52a6b9d82fe91976c83cc158868b4e9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2f46160d0a19b13bfe96c0dd50eed5c5d253ab7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/34f48ce5d5936eea33e3b6415403e57eb84aff97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.