SEPTEMBER 8, 2026
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Case File

CVE-2026-63954

HIGH · CVSS 7.8 EPSS 0.16%

Source: NVD + CISA KEV + EPSS · Published 2026-07-19 · Last synced 2026-08-18

CyberRota Analysis

AI-Generated

A vulnerability in the Linux kernel affects the HPFS file system, where a failure in the hpfs_map_dnode_bitmap function can lead to a crash due to the attempt to release an uninitialized quad buffer head. This high-severity issue poses a risk of system instability and potential denial of service. System administrators and developers managing Linux environments, particularly those utilizing HPFS, should prioritize applying the relevant patches to mitigate this risk.

CVE
CVE-2026-63954
Severity
HIGH
CVSS
7.8
EPSS
0.16%
Linux

Original NVD Description

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.