CVE-2026-49415

During execve2 of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw...

CVE-2026-49415

FreeBSD kernel is affected by a TOCTOU race in execve(2): when executing a SUID binary, the new address space is installed before credentials are updated, so a same-user process can read or modify memory via procfs/linprocfs during the window. An unprivileged local user can exploit this to gain r...

CVE-2026-49415 Local privilege escalation via execve(2) TOCTOU race

During execve2 of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw...

FreeBSD-SA-26:39.execve

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:39.execve Security Advisory The FreeBSD Project Topic: Local privilege escalation via execve2 TOCTOU race Category: core Module: execve Announced: 2026-06-30...