CVE-2023-53337 (GCVE-0-2023-53337)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-14 18:43
VLAI?
Title
nilfs2: do not write dirty data after degenerating to read-only
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: do not write dirty data after degenerating to read-only According to syzbot's report, mark_buffer_dirty() called from nilfs_segctor_do_construct() outputs a warning with some patterns after nilfs2 detects metadata corruption and degrades to read-only mode. After such read-only degeneration, page cache data may be cleared through nilfs_clear_dirty_page() which may also clear the uptodate flag for their buffer heads. However, even after the degeneration, log writes are still performed by unmount processing etc., which causes mark_buffer_dirty() to be called for buffer heads without the "uptodate" flag and causes the warning. Since any writes should not be done to a read-only file system in the first place, this fixes the warning in mark_buffer_dirty() by letting nilfs_segctor_do_construct() abort early if in read-only mode. This also changes the retry check of nilfs_segctor_write_out() to avoid unnecessary log write retries if it detects -EROFS that nilfs_segctor_do_construct() returned.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < bd89073fc7a5d03b1d06b372addbe405e5a925f4 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < e9c5412c5972124776c1b873533eb39e287a4dfa (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 4569a292a84e340e97d178898ad1cfe1a3080a61 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 7c3e662048053802f6b0db3a78e97f4e1f7edc4f (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 13f73ef77baa4764dc1ca4fcbae9cade05b83866 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < a73201c607d8e506358d60aafddda4246bdd9350 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 4005cec6847c06ee191583270b7cdd7e696543cc (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 55f7810632f993cff622a0ddbc7c865892294b61 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 28a65b49eb53e172d23567005465019658bfdb4d (git)
Create a notification for this product.
    Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 4.14.315 , ≤ 4.14.* (semver)
Unaffected: 4.19.283 , ≤ 4.19.* (semver)
Unaffected: 5.4.243 , ≤ 5.4.* (semver)
Unaffected: 5.10.180 , ≤ 5.10.* (semver)
Unaffected: 5.15.111 , ≤ 5.15.* (semver)
Unaffected: 6.1.28 , ≤ 6.1.* (semver)
Unaffected: 6.2.15 , ≤ 6.2.* (semver)
Unaffected: 6.3.2 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"https://git.kernel.org/stable/c/4005cec6847c06ee191583270b7cdd7e696543cc\"}, {\"url\": \"https://git.kernel.org/stable/c/55f7810632f993cff622a0ddbc7c865892294b61\"}, {\"url\": \"https://git.kernel.org/stable/c/28a65b49eb53e172d23567005465019658bfdb4d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnilfs2: do not write dirty data after degenerating to read-only\\n\\nAccording to syzbot\u0027s report, mark_buffer_dirty() called from\\nnilfs_segctor_do_construct() outputs a warning with some patterns after\\nnilfs2 detects metadata corruption and degrades to read-only mode.\\n\\nAfter such read-only degeneration, page cache data may be cleared through\\nnilfs_clear_dirty_page() which may also clear the uptodate flag for their\\nbuffer heads.  However, even after the degeneration, log writes are still\\nperformed by unmount processing etc., which causes mark_buffer_dirty() to\\nbe called for buffer heads without the \\\"uptodate\\\" flag and causes the\\nwarning.\\n\\nSince any writes should not be done to a read-only file system in the\\nfirst place, this fixes the warning in mark_buffer_dirty() by letting\\nnilfs_segctor_do_construct() abort early if in read-only mode.\\n\\nThis also changes the retry check of nilfs_segctor_write_out() to avoid\\nunnecessary log write retries if it detects -EROFS that\\nnilfs_segctor_do_construct() returned.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.315\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.283\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.243\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.180\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.111\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.28\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.15\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.2\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4\", \"versionStartIncluding\": \"3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:19:29.560Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53337\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:43:01.138Z\", \"dateReserved\": \"2025-09-16T16:08:59.565Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-17T14:56:31.582Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.