CVE-2023-54140 (GCVE-0-2023-54140)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2025-12-24 13:06
VLAI?
Title
nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse A syzbot stress test using a corrupted disk image reported that mark_buffer_dirty() called from __nilfs_mark_inode_dirty() or nilfs_palloc_commit_alloc_entry() may output a kernel warning, and can panic if the kernel is booted with panic_on_warn. This is because nilfs2 keeps buffer pointers in local structures for some metadata and reuses them, but such buffers may be forcibly discarded by nilfs_clear_dirty_page() in some critical situations. This issue is reported to appear after commit 28a65b49eb53 ("nilfs2: do not write dirty data after degenerating to read-only"), but the issue has potentially existed before. Fix this issue by checking the uptodate flag when attempting to reuse an internally held buffer, and reloading the metadata instead of reusing the buffer if the flag was lost.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 473795610594f261e98920f0945550314df36f07 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < d95e403588738c7ec38f52b9f490b15e7745d393 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 99a73016a5e12a09586a96f998e91f9ea145cd00 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < f1d637b63d8a27ac3386f186a694907f2717fc13 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < b911bef132a06de01a745c6a24172d6db7216333 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 4da07e958bfda2d69d83db105780e8916e3ac02e (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < 46c11be2dca295742a5508ea910a77f7733fb7f4 (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < b308b3eabc429649b5501d36290cea403fbd746c (git)
Affected: 8c26c4e2694a163d525976e804d81cd955bbb40c , < cdaac8e7e5a059f9b5e816cda257f08d0abffacd (git)
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    Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.131 , ≤ 5.15.* (semver)
Unaffected: 6.1.52 , ≤ 6.1.* (semver)
Unaffected: 6.4.15 , ≤ 6.4.* (semver)
Unaffected: 6.5.2 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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  }
}


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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.
  • 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.



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