CVE-2026-64257 | Linux Kernel SMB Client __smb2_calc_size buffer overflow

July 25, 2026 Yanac

A vulnerability described as very critical has been identified in Linux Kernel. The impacted element is the function __smb2_calc_size of the component SMB Client. Executing a manipulation can lead to buffer overflow.

This vulnerability appears as CVE-2026-64257. The attack may be performed from remote. There is no available exploit.

It is best practice to apply a patch to resolve this issue.VulDB Recent EntriesRead More