{"id":"CVE-2026-47334","state":"PUBLISHED","title":"Deadlock or kernel panic in Ubuntu Linux AppArmor notification handling","description":"Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code. The bug can be triggered by an unprivileged local user and can result in kernel panic or deadlock.","publishedAt":"2026-05-28T18:28:39.628Z","updatedAt":"2026-05-28T19:23:51.066Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"canonical"},"assigner":"canonical","products":["Canonical Ubuntu Linux"],"affected":[{"vendor":"Canonical","product":"Ubuntu Linux","packageName":"linux","defaultStatus":"unaffected","versions":[{"version":"6.8.0","status":"affected","lessThan":"6.8.0-124.124","versionType":"dpkg"},{"version":"6.17.0","status":"affected","lessThan":"6.17.0-35.35","versionType":"dpkg"},{"version":"7.0.0","status":"affected","lessThan":"7.0.0-22.22","versionType":"dpkg"}],"collectionURL":"https://launchpad.net/ubuntu/+source/","repo":"https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/","modules":["AppArmor"]}],"references":["https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=f0e73aec23d13a9877fba096b1c2fd19f66e5313"],"weaknesses":["CWE-833"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47334.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47334","state":"PUBLISHED","datePublished":"2026-05-28T18:28:39.628Z","dateUpdated":"2026-05-28T19:23:51.066Z","assignerShortName":"canonical","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateReserved":"2026-05-19T10:37:36.433Z"},"containers":{"cna":{"title":"Deadlock or kernel panic in Ubuntu Linux AppArmor notification handling","descriptions":[{"lang":"en","value":"Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code. The bug can be triggered by an unprivileged local user and can result in kernel panic or deadlock."}],"affected":[{"vendor":"Canonical","product":"Ubuntu Linux","packageName":"linux","defaultStatus":"unaffected","versions":[{"version":"6.8.0","status":"affected","lessThan":"6.8.0-124.124","versionType":"dpkg"},{"version":"6.17.0","status":"affected","lessThan":"6.17.0-35.35","versionType":"dpkg"},{"version":"7.0.0","status":"affected","lessThan":"7.0.0-22.22","versionType":"dpkg"}],"collectionURL":"https://launchpad.net/ubuntu/+source/","repo":"https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/","modules":["AppArmor"]}],"references":[{"url":"https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=f0e73aec23d13a9877fba096b1c2fd19f66e5313","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":5.5,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-833","lang":"en","description":"CWE-833 Deadlock","type":"CWE"}]}],"providerMetadata":{"shortName":"canonical","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateUpdated":"2026-05-28T18:28:39.628Z"},"credits":[{"lang":"en","value":"Tristan Madani (@TristanInSec), Talence Security","type":"finder"}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-28T19:21:02.287047Z","id":"CVE-2026-47334","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-28T19:23:51.066Z"}}]}}}