Researchers disclose Fragnesia Linux root-escalation flaw (opens in new tab)

Security researchers disclosed Fragnesia, a Linux kernel local privilege escalation vulnerability tracked as CVE-2026-46300, after recent Dirty Frag findings involved related kernel networking code. Researchers said a local unprivileged attacker can gain root by corrupting page-cache memory for protected files, and V12's public proof-of-concept code was available on GitHub at disclosure. LWN, The Register and Help Net Security reported on implementation details, patch status and theories abou...