CVE-2024-50116

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 033bc52f35868c2493a2d95c56ece7fc155d7cb3affected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 412a30b1b28d6073ba29c46a2b0f324c5936293faffected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 9f2ab98371c2f2488bf3bf3f9b2a73510545e9c1affected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 822203f6355f4b322d21e7115419f6b98284be25affected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 27524f65621f490184f2ace44cd8e5f3685af4a3affected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 743c78d455e784097011ea958b27396001181567affected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < c6f58ff2d4c552927fe9a187774e668ebba6c7aaaffected
LinuxLinux8c26c4e2694a163d525976e804d81cd955bbb40c < 6ed469df0bfbef3e4b44fca954a781919db9f7abaffected
LinuxLinux3.10affected
LinuxLinux0 < 3.10unaffected
LinuxLinux4.19.323 <= 4.19.*unaffected
LinuxLinux5.4.285 <= 5.4.*unaffected
LinuxLinux5.10.229 <= 5.10.*unaffected
LinuxLinux5.15.170 <= 5.15.*unaffected
LinuxLinux6.1.115 <= 6.1.*unaffected
LinuxLinux6.6.59 <= 6.6.*unaffected
LinuxLinux6.11.6 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References