A vulnerability, which was classified as critical , was found in Linux Kernel up to 6.1.167/6.6.130/6.12.79/6.18.20/6.19.10 . This affects the function process_sdp of the component nf_conntrack_sip . The manipulation results in uninitialized pointer. This vulnerability is identified as CVE-2026-31427 . The attack can only be performed from the local network. There is not any exploit available. You should upgrade the affected component.