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Message   LWN.net    All   A set of AppArmor vulnerabilities   March 14, 2026
 6:40 AM *   

Qualys has sent out a
somewhat breathless advisory describing a number of vulnerabilities in
the AppArmor security module, which is used in a number of Debian-based
distributions (among others).

This "CrackArmor" advisory exposes a confused-deputy flaw allowing
	unprivileged users to manipulate security profiles via
	pseudo-files, bypass user-namespace restrictions, and execute
	arbitrary code within the kernel. These flaws facilitate local
	privilege escalation to root through complex interactions with
	tools like Sudo and Postfix, alongside denial-of-service attacks
	via stack exhaustion and Kernel Address Space Layout Randomization
	(KASLR) bypasses via out-of-bounds reads.

https://lwn.net/Articles/1062778/
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