A vulnerability labeled as critical has been found in Linux Kernel up to 6.6.139/6.12.87/6.18.29/7.0.6/7.1-rc2 . This affects the function peek . The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2026-43496 . The attack must originate from the local network. There is no exploit available. The affected component should be upgraded.