Out-of-bounds read in Linux kernel - CVE-2026-46130
Published: May 29, 2026
Vulnerability identifier: #VU133065
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-46130
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in fec_decode_bufs() in dm-verity-fec when decoding parity bytes split across parity blocks. A local user can trigger the vulnerable code path to disclose sensitive information.
The issue occurs only for certain non-default fec_roots values and when the maximum number of buffers cannot be allocated due to low-memory conditions.
How to mitigate CVE-2026-46130
Install security update from vendor's repository.