CVE-2026-80775

CVE-2026-80775 is a race condition in the Linux kernel futex subsystem, specifically in the initial allocation of mm->futex.phash.ref. The root cause is a concurrent execution scenario introduced by nested vfork : when a vfork child calls vfork again and is killed with SIGKILL, the parent and ...

CVE-2026-80775: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: futex: Fix race on the initial mm-futex.phash.ref allocation futexhashallocate allocates mm-futex.phash.ref without any locking. Commit d9b05321e21e "futex: Move futexhashfree back to mmput" moved the allocation here and assumed...