CVE-2021-29628

CVE-2021-29628 affects FreeBSD kernel SMAP handling. The issue arises when copyin()/copyout() disable SMAP for user memory accesses; a bug caused SMAP to remain disabled until return to user mode, bypassing protections during a system call. Impact is that SMAP protections could be bypassed and, c...

FreeBSD-SA-21:11.smap

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-21:11.smap Security Advisory The FreeBSD Project Topic: SMAP bypass Category: core Module: amd64 Announced: 2021-05-26 Credits: I lost my dog if you see him...