Ubuntu Linux Kernel Multiple Vulnerabilities
Ubuntu Linux Kernel Multiple Vulnerabilities
https://www.hkcert.org/security-bulletin/ubuntu-linux-kernel-multiple-vulnerabilities_20260602
Publish Date: 2026-06-01 22:38:00
Source Domain: www.hkcert.org
Multiple vulnerabilities were identified in Ubuntu Linux Kernel. A remote attacker could exploit some of these vulnerabilities to trigger denial of service condition, elevation of privilege and security restriction bypass on the targeted system.
Note:
CVE-2026-31431 is being exploited in the wild. Copy Fail (CVE-2026-31431) is a logic bug in the Linux kernel’s authencesn cryptographic template. It lets an unprivileged local user trigger a deterministic, controlled 4-byte write into the page cache of any readable file on the system. A single 732-byte Python script can edit a setuid binary and obtain root on essentially all Linux distributions shipped since 2017.
[Updated on 2026-06-03]
Updated Description, System / Technologies affected, Solutions, Vulnerability Identifier and Related Links.
