PT-2026-61271 · Linux · Linux

CVE-2026-63954 · Published 2026-07-19 · Updated 2026-07-19

Mitre

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

CVE-2026-63954

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-63954 · Security Note
• https://git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0 · Note
• https://git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602bef · Note
• https://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe · Note
• https://git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4f · Note
• https://git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9f · Note
• https://git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288 · Note
• https://git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22c · Note
• https://git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708f · Note