CVE-2026-63954

EUVD-2026-45727
In the Linux kernel, the following vulnerability has been resolved:

hpfs: fix a crash if hpfs_map_dnode_bitmap fails

If hpfs_map_dnode_bitmap fails, the code would call hpfs_brelse4 on
uninitialized quad buffer head, causing a crash.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
---
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.176-1
fixed
bookworm (security)
6.1.177-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.259-1
fixed
forky
7.1.3-1
fixed
sid
7.1.4-1
fixed
trixie
6.12.94-1
fixed
trixie (security)
6.12.95-1
fixed
References
https://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe
https://git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22c
https://git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0
https://git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708f
https://git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602bef
https://git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4f
https://git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9f
https://git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288