CVE-2026-64402 | Linux Kernel up to 6.6.144/6.12.95/6.18.38/7.1.3 ultrasoc-smb smb_sync_perf_buffer head out-of-bounds write

July 25, 2026 Yanac

A vulnerability was found in Linux Kernel up to 6.6.144/6.12.95/6.18.38/7.1.3 and classified as very critical. Impacted is the function smb_sync_perf_buffer of the component ultrasoc-smb. Executing a manipulation of the argument head can lead to out-of-bounds write.

This vulnerability is tracked as CVE-2026-64402. The attack is restricted to local execution. No exploit exists.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More