Out-of-bounds read in Linux kernel - CVE-2026-43166
Published: May 7, 2026
Vulnerability identifier: #VU130573
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43166
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in z_erofs_transform_plain() when processing a crafted compressed image containing plain extents with unaligned physical lengths. A local user can supply a specially crafted compressed image to disclose sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2026-43166
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3