CVE-2026-64559 | Linux Kernel up to 6.12.96/6.18.39/7.1.4 s390/pkey PKEY_VERIFYPROTK buffer overflow

July 29, 2026 Yanac

A vulnerability classified as very critical was found in Linux Kernel up to 6.12.96/6.18.39/7.1.4. This affects the function PKEY_VERIFYPROTK of the component s390/pkey. The manipulation results in buffer overflow.

This vulnerability is identified as CVE-2026-64559. The attack is only possible with local access. There is not any exploit available.

Upgrading the affected component is advised.VulDB Recent EntriesRead More