Improper input validation in Linux kernel - CVE-2026-80544
Published: August 27, 2026
Vulnerability identifier: #VU145945
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80544
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information, modify data, or cause a denial of service.
The vulnerability exists due to improper input validation in zcrypt_msgtype6_send_ep11_cprb() when parsing ASN.1-encoded EP11 CPRB payloads. A local user can provide a specially crafted payload to disclose sensitive information, modify data, or cause a denial of service.
The issue affects domain field handling for non-management commands.
Affected software
Linux kernel
How to mitigate CVE-2026-80544
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3