A vulnerability, which was classified as critical , was found in Linux Kernel up to 6.12.87/6.18.29/7.0.6/7.1-rc2 . This impacts the function smb_inherit_dacl of the component ksmbd . Such manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2026-43490 . The attack can only be initiated within the local network. No exploit exists. You should upgrade the affected component.