CVE-2026-43109

Descrição

In the Linux kernel, the following vulnerability has been resolved: x86: shadow stacks: proper error handling for mmap lock 김영민 reports that shstk_pop_sigframe() doesn-t check for errors from mmap_read_lock_killable(), which is a silly oversight, and also shows that we haven-t marked those functions with -__must_check-, which would have immediately caught it. So let-s fix both issues.