K000162693: Linux kernel: rxrpc oversized RESPONSE authenticator length check vulnerability CVE-2026-31635

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix oversized RESPONSE authenticator length check rxgkverifyresponse decodes authlen from the packet and is supposed to verify that it fits in the remaining bytes. The existing check is...

CVE-2026-31635

A flaw was found in the Linux kernel's rxrpc component. An inverted length check in the rxgkverifyresponse function allows oversized RESPONSE authenticators to be accepted. This can lead to an impossible length being passed to skbtosgvec, triggering a BUGON condition and resulting in a system...