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Vulnerability IntelligenceCVE-2026-63954

CVE-2026-63954

HIGH7.8

hpfs: fix a crash if hpfs_map_dnode_bitmap fails

Published Jul 19, 2026

Modified 2 months ago

Details

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.

References

WEB

https://git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe

WEB

https://git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22c

WEB

https://git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0

WEB

https://git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708f

WEB

https://git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602bef

WEB

https://git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4f

WEB

https://git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9f

WEB

https://git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-63954

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7.8/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Ecosystems

Timeline

PublishedJul 19, 2026

ModifiedAug 5, 2026

CVE-2026-63954 | Mondoo Vulnerability Intelligence