CVE-2026-63954

hpfs: fix a crash if hpfs_map_dnode_bitmap fails

High · published July 19, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
5.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00169 · 5.9th percentile
Published
2026-07-19T14:55Z
EPSS history
Timeline
  • 19 JUL 14:55Z
    hpfs: fix a crash if hpfs_map_dnode_bitmap fails
    cvelistv5