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CVE-2022-21505 is an authentication-bypass flaw in Linux kernel Integrity Measurement Architecture (IMA) appraisal policy handling. When kernel lockdown is used without Secure Boot, IMA permits the ima_appraise=log boot parameter. A sufficiently privileged local user can then use kexec to bypass lockdown protections. IMA prevents this parameter under Secure Boot, but the protection did not cover lockdown deployments where Secure Boot is disabled or unavailable.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel lockdown bypass involving Integrity Measurement Architecture (IMA).
Linux kernel Integrity Measurement Architecture flaw enabling lockdown bypass.
A Linux kernel vulnerability that permits a trivial bypass of kernel lockdown using Integrity Measurement Architecture (IMA).
A moderate-severity local authentication-bypass vulnerability in the Linux kernel IMA policy during lockdown operations. A local user with high privileges may cause a denial of service or potentially escalate privileges.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.