CVE-2026-43109

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the x86 shadow stacks implementation where the shstk pop sigframe() function fails to check for errors returned by mmap read lock killable(). This occurs because the function was not marked with must check, which is a compiler attribute used to ensure that the return value of a function is not ignored.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.