AppArmor CrackArmor mitigation guidance
Advisory/Mitigation
Summary
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Qualys issued urgent mitigation guidance for CrackArmor, telling organizations to update Linux kernel packages immediately to reduce risk from the AppArmor flaws. The advisory matters because the issue can enable root access, protections bypass, and service outages across millions of Linux systems. Defenders were also told to scan for vulnerable hosts and watch AppArmor profile directories for tampering.
Related Happenings
Linux kernel RDS PinTheft local privilege escalation flaw (public PoC)
Vulnerability
First: 20.05.2026 13:52
Last: 20.05.2026 13:52
Sources 1
About this happening:
**PinTheft** now has a **public PoC exploit**, turning a recently patched **Linux kernel RDS** flaw into a practical **local privilege escalation** risk for **Arch Linux** systems...
Linux kernel RDS PinTheft local privilege escalation flaw (public PoC)
VulnerabilityAbout this happening: **PinTheft** now has a **public PoC exploit**, turning a recently patched **Linux kernel RDS** flaw into a practical **local privilege escalation** risk for **Arch Linux** systems...
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Vulnerability
First: 18.05.2026 10:18
Last: 18.05.2026 10:18
Sources 1
About this happening:
A **proof-of-concept exploit** has been released for **DirtyDecrypt/DirtyCBC** (**CVE-2026-31635**), a **recently patched Linux kernel** flaw in **rxgk_decrypt_skb()** that can en...
Linux kernel rxgk local DirtyDecrypt/DirtyCBC privilege-escalation flaw (CVE-2026-31635)
VulnerabilityAbout this happening: A **proof-of-concept exploit** has been released for **DirtyDecrypt/DirtyCBC** (**CVE-2026-31635**), a **recently patched Linux kernel** flaw in **rxgk_decrypt_skb()** that can en...
Timeline
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16.03.2026 16:00 2 articles · 2mo ago
CrackArmor disclosure and urgent kernel patching
Mitigation Patch UpdateQualys disclosed CrackArmor, a set of nine AppArmor vulnerabilities in the Linux kernel, and warned that an unprivileged local attacker on AppArmor-enabled systems could gain root access, bypass protections, crash systems, or disrupt services. Qualys urged organizations to apply vendor kernel updates immediately, scan for vulnerable hosts, and monitor AppArmor profile directories for suspicious modifications.
Show sources
- CrackArmor Flaws Expose Linux Systems to Privilege Escalation — www.infosecurity-magazine.com — 16.03.2026 16:00
- CrackArmor Flaws Expose Linux Systems to Privilege Escalation — www.infosecurity-magazine.com — 16.03.2026 16:00