Inclusion of Sensitive Information in Log Files in Linux kernel - CVE-2026-31543
Published: April 25, 2026
Vulnerability identifier: #VU127851
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-2026-31543
CWE-ID: CWE-532
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 insertion of sensitive information into log files in read_key_from_user_keying() when debug logging is enabled while processing key payloads. A local user can trigger key handling to disclose sensitive information.
Only the first 8 bytes of the dm-crypt key payload are exposed, and only when debug logging is enabled.
How to mitigate CVE-2026-31543
Install security update from vendor's repository.