CVE-2026-63954
HIGH severity · CVSS 7.8
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfePatch
- https://git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22cPatch
- https://git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0Patch
- https://git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708fPatch
- https://git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602befPatch
- https://git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4fPatch
- https://git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9fPatch
- https://git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288Patch