Riskcovery

CVE-2024-50116

nilfs2: fix kernel bug due to missing clearing of buffer delay flag

State
Published
Severity
5.5 Medium
Published
Nov 5, 2024
Updated
May 11, 2026
Reserved
Oct 21, 2024

Read the record on cve.org

Description

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

nilfs2: fix kernel bug due to missing clearing of buffer delay flag

Syzbot reported that after nilfs2 reads a corrupted file system image and degrades to read-only, the BUG_ON check for the buffer delay flag in submit_bh_wbc() may fail, causing a kernel bug.

This is because the buffer delay flag is not cleared when clearing the buffer state flags to discard a page/folio or a buffer head. So, fix this.

This became necessary when the use of nilfs2's own page clear routine was expanded. This state inconsistency does not occur if the buffer is written normally by log writing.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 033bc52f35868c2493a2d95c56ece7fc155d7cb3Affected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 412a30b1b28d6073ba29c46a2b0f324c5936293fAffected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 9f2ab98371c2f2488bf3bf3f9b2a73510545e9c1Affected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 822203f6355f4b322d21e7115419f6b98284be25Affected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 27524f65621f490184f2ace44cd8e5f3685af4a3Affected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 743c78d455e784097011ea958b27396001181567Affected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before c6f58ff2d4c552927fe9a187774e668ebba6c7aaAffected
  • 8c26c4e2694a163d525976e804d81cd955bbb40c to before 6ed469df0bfbef3e4b44fca954a781919db9f7abAffected
LinuxLinux
  • 3.10Affected
  • before 3.10Not affected
  • 4.19.323 through 4.19.*Not affected
  • 5.4.285 through 5.4.*Not affected
  • 5.10.229 through 5.10.*Not affected
  • 5.15.170 through 5.15.*Not affected
  • 6.1.115 through 6.1.*Not affected
  • 6.6.59 through 6.6.*Not affected
  • 6.11.6 through 6.11.*Not affected
  • 6.12 and laterNot affected

References

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