--- title: AppArmor vulnerability fixes available | daily.dev description: Qualys discovered multiple AppArmor Linux kernel vulnerabilities (dubbed CrackArmor) affecting all supported Ubuntu releases. Impacts range from denial of... canonical: https://daily.dev/posts/apparmor-vulnerability-fixes-available-x5zpvnaub twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: AppArmor vulnerability fixes available | daily.dev og:description: Qualys discovered multiple AppArmor Linux kernel vulnerabilities (dubbed CrackArmor) affecting all supported Ubuntu releases. Impacts range from denial of... og:url: https://daily.dev/posts/apparmor-vulnerability-fixes-available-x5zpvnaub og:image: https://api.daily.dev/og/posts/X5ZpVnaUB.png og:image:alt: AppArmor vulnerability fixes available og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # AppArmor vulnerability fixes available **[Ubuntu](https://daily.dev/sources/ubuntu)** · 8 min read · 0 upvotes · 0 comments ## Summary Qualys discovered multiple AppArmor Linux kernel vulnerabilities (dubbed CrackArmor) affecting all supported Ubuntu releases. Impacts range from denial of service and kernel memory leaks to local privilege escalation and potential container escape. Ubuntu has released security updates for the Linux kernel, sudo, and util-linux packages. Users should apply kernel updates (requiring a reboot) and userspace mitigations for sudo and util-linux. Container deployments are at higher risk. Specific fixed package versions are provided per Ubuntu release, along with commands to check installed versions and apply updates. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [AppArmor Enhancements Merged For Linux 7.0](https://daily.dev/posts/apparmor-enhancements-merged-for-linux-7-0-gaunsche5) · Phoronix · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#linux](https://daily.dev/tags/linux), [#ubuntu](https://daily.dev/tags/ubuntu) [View this post on daily.dev](https://daily.dev/posts/apparmor-vulnerability-fixes-available-x5zpvnaub) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"AppArmor vulnerability fixes available","url":"https://daily.dev/posts/apparmor-vulnerability-fixes-available-x5zpvnaub","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/apparmor-vulnerability-fixes-available-x5zpvnaub"},"datePublished":"2026-03-13T22:15:51.519Z","dateModified":"2026-03-16T11:12:56.607Z","description":"Qualys discovered multiple AppArmor Linux kernel vulnerabilities (dubbed CrackArmor) affecting all supported Ubuntu releases. 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