CVE-2026-31539 | Linux Kernel up to 6.18.10/6.19.0 smb smbdirect_socket.recv_io.credits.available buffer overflow (WID-SEC-2026-1279)

A vulnerability was found in Linux Kernel up to 6.18.10/6.19.0 and classified as critical. Impacted is the function smbdirect_socket.recv_io.credits.available of the component smb. Such manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2026-31539. The attack can only be initiated within the local network. No exploit exists. It is suggested to upgrade the affected component.