linux privilege escalation

CVE-2026-4878 in libcap is a local privilege-escalation flaw rooted in a TOCTOU race condition inside cap_set_file(), and Microsoft’s Security Update Guide classifies the downstream impact as serious enough to include high availability loss in its risk framing. The core concern is that a local...

AppArmor is back in the spotlight, and this time the concern is not a subtle policy quirk but a path that reportedly lets an unprivileged local user reach privileged policy management. The issue behind CVE-2026-23268 matters because AppArmor sits at the heart of Linux containment for desktops...