Debian has just released a major kernel security update that aggregates fixes for 1,313 CVE entries, a headline figure that has drawn attention across the Linux community. The update — published as DSA-6528-1 and delivered for the Trixie stable release as Linux source package 6.12.111-1 — addresses a range of vulnerabilities that could, in different contexts, lead to privilege escalation,
Tag: Linux kernel
Copy Fail (CVE-2026-31431): A 4‑Byte Kernel Bug That Lets Attackers Gain Root on Major Linux Distros
Microsoft Defender Security Research recently disclosed CVE-2026-31431—nicknamed “Copy Fail”—a high‑severity local privilege escalation in the Linux kernel’s crypto subsystem that enables an unprivileged user to escalate to root. The vulnerability affects kernels released since 2017 and has broad implications for cloud and container environments because the exploit can corrupt in-memory representations of readable files (including setuid binaries) without changing the
CrackArmor: Nine AppArmor Flaws Let Local Users Escalate to Root — What Organizations Need to Know
AppArmor, a widely deployed Linux Mandatory Access Control (MAC) framework, is at the center of a set of serious vulnerabilities that researchers have dubbed “CrackArmor.” Disclosed on March 12, 2026 by the Qualys Threat Research Unit (TRU), the collection of flaws affects AppArmor’s implementation as a Linux Security Module (LSM) and has been present in the upstream kernel since around