{"id":"AZL-82016","summary":"CVE-2026-23404 affecting package kernel for versions less than 6.6.130.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: replace recursive profile removal with iterative approach\n\nThe profile removal code uses recursion when removing nested profiles,\nwhich can lead to kernel stack exhaustion and system crashes.\n\nReproducer:\n  $ pf='a'; for ((i=0; i\u003c1024; i++)); do\n      echo -e \"profile $pf { \\n }\" | apparmor_parser -K -a;\n      pf=\"$pf//x\";\n  done\n  $ echo -n a \u003e /sys/kernel/security/apparmor/.remove\n\nReplace the recursive __aa_profile_list_release() approach with an\niterative approach in __remove_profile(). The function repeatedly\nfinds and removes leaf profiles until the entire subtree is removed,\nmaintaining the same removal semantic without recursion.","modified":"2026-08-28T17:47:43.553983873Z","published":"2026-04-01T09:16:15Z","upstream":["CVE-2026-23404"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23404"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.130.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-82016.json"}}],"schema_version":"1.9.0"}