{"id":"CVE-2026-23268","summary":"apparmor: fix unprivileged local user can do privileged policy management","details":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix unprivileged local user can do privileged policy management\n\nAn unprivileged local user can load, replace, and remove profiles by\nopening the apparmorfs interfaces, via a confused deputy attack, by\npassing the opened fd to a privileged process, and getting the\nprivileged process to write to the interface.\n\nThis does require a privileged target that can be manipulated to do\nthe write for the unprivileged process, but once such access is\nachieved full policy management is possible and all the possible\nimplications that implies: removing confinement, DoS of system or\ntarget applications by denying all execution, by-passing the\nunprivileged user namespace restriction, to exploiting kernel bugs for\na local privilege escalation.\n\nThe policy management interface can not have its permissions simply\nchanged from 0666 to 0600 because non-root processes need to be able\nto load policy to different policy namespaces.\n\nInstead ensure the task writing the interface has privileges that\nare a subset of the task that opened the interface. This is already\ndone via policy for confined processes, but unconfined can delegate\naccess to the opened fd, by-passing the usual policy check.","modified":"2026-05-18T05:58:34.331614Z","published":"2026-03-18T17:54:41.974Z","related":["SUSE-SU-2026:0961-1","SUSE-SU-2026:0962-1","SUSE-SU-2026:0984-1","SUSE-SU-2026:1003-1","SUSE-SU-2026:1041-1","SUSE-SU-2026:1077-1","SUSE-SU-2026:1078-1","SUSE-SU-2026:1081-1","SUSE-SU-2026:1131-1","SUSE-SU-2026:1444-1","SUSE-SU-2026:1447-1","SUSE-SU-2026:1454-1","SUSE-SU-2026:1456-1","SUSE-SU-2026:1458-1","SUSE-SU-2026:1463-1","SUSE-SU-2026:1464-1","SUSE-SU-2026:1468-1","SUSE-SU-2026:1469-1","SUSE-SU-2026:1505-1","SUSE-SU-2026:1513-1","SUSE-SU-2026:1527-1","SUSE-SU-2026:1531-1","SUSE-SU-2026:1532-1","SUSE-SU-2026:1535-1","SUSE-SU-2026:1537-1","SUSE-SU-2026:1560-1","SUSE-SU-2026:1578-1","SUSE-SU-2026:1583-1","SUSE-SU-2026:1584-1","SUSE-SU-2026:1592-1","SUSE-SU-2026:1611-1","SUSE-SU-2026:1613-1","SUSE-SU-2026:1621-1","SUSE-SU-2026:1622-1","SUSE-SU-2026:1629-1","SUSE-SU-2026:1630-1","SUSE-SU-2026:1631-1","SUSE-SU-2026:21266-1","SUSE-SU-2026:21267-1","SUSE-SU-2026:21268-1","SUSE-SU-2026:21269-1","SUSE-SU-2026:21270-1","SUSE-SU-2026:21271-1","SUSE-SU-2026:21277-1","SUSE-SU-2026:21278-1","SUSE-SU-2026:21279-1","SUSE-SU-2026:21281-1","SUSE-SU-2026:21282-1","SUSE-SU-2026:21293-1","SUSE-SU-2026:21294-1","SUSE-SU-2026:21295-1","SUSE-SU-2026:21296-1","SUSE-SU-2026:21297-1","SUSE-SU-2026:21298-1","SUSE-SU-2026:21299-1","SUSE-SU-2026:21300-1","SUSE-SU-2026:21301-1","SUSE-SU-2026:21302-1","SUSE-SU-2026:21303-1","SUSE-SU-2026:21304-1","SUSE-SU-2026:21305-1","SUSE-SU-2026:21306-1","SUSE-SU-2026:21307-1","SUSE-SU-2026:21308-1","SUSE-SU-2026:21309-1","SUSE-SU-2026:21310-1","SUSE-SU-2026:21311-1","SUSE-SU-2026:21312-1","SUSE-SU-2026:21313-1","SUSE-SU-2026:21314-1","SUSE-SU-2026:21315-1","SUSE-SU-2026:21316-1","SUSE-SU-2026:21322-1","SUSE-SU-2026:21323-1","SUSE-SU-2026:21324-1","SUSE-SU-2026:21325-1","SUSE-SU-2026:21326-1","SUSE-SU-2026:21327-1","SUSE-SU-2026:21328-1","SUSE-SU-2026:21329-1","SUSE-SU-2026:21330-1","SUSE-SU-2026:21331-1","SUSE-SU-2026:21332-1","SUSE-SU-2026:21333-1","SUSE-SU-2026:21334-1","SUSE-SU-2026:21335-1","SUSE-SU-2026:21336-1","SUSE-SU-2026:21337-1","SUSE-SU-2026:21338-1","SUSE-SU-2026:21339-1","SUSE-SU-2026:21340-1","SUSE-SU-2026:21341-1","SUSE-SU-2026:21342-1","SUSE-SU-2026:21343-1","SUSE-SU-2026:21344-1","SUSE-SU-2026:21345-1","SUSE-SU-2026:21347-1","SUSE-SU-2026:21348-1","SUSE-SU-2026:21349-1","SUSE-SU-2026:21385-1","SUSE-SU-2026:21386-1","SUSE-SU-2026:21387-1","SUSE-SU-2026:21388-1","SUSE-SU-2026:21399-1","SUSE-SU-2026:21401-1","SUSE-SU-2026:21402-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23268.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0fc63dd9170643d15c25681fca792539e23f4640"},{"type":"WEB","url":"https://git.kernel.org/stable/c/17debf5586020790b5717f96e5e6a3ca5bb961ab"},{"type":"WEB","url":"https://git.kernel.org/stable/c/33ee909702e047c94aaf41d4eea35626d509802c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4cafce4d6d0a66ec27e3af5637c11901d60189fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6601e13e82841879406bf9f369032656f441a425"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a407a078cd41b5261b99d822af784bd9f136eb4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b60b3f7a35c46b2e0ca934f9c988b8fca06d76c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6a94eeca9c6c8f7c55ad44c62c98324f51ec596"},{"type":"WEB","url":"https://www.qualys.com/2026/03/10/crack-armor.txt"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23268.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23268"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b7fd2c0340eacbee892425e9007647568b7f2a3c"},{"fixed":"a407a078cd41b5261b99d822af784bd9f136eb4d"},{"fixed":"4cafce4d6d0a66ec27e3af5637c11901d60189fa"},{"fixed":"33ee909702e047c94aaf41d4eea35626d509802c"},{"fixed":"17debf5586020790b5717f96e5e6a3ca5bb961ab"},{"fixed":"0fc63dd9170643d15c25681fca792539e23f4640"},{"fixed":"b60b3f7a35c46b2e0ca934f9c988b8fca06d76c6"},{"fixed":"b6a94eeca9c6c8f7c55ad44c62c98324f51ec596"},{"fixed":"6601e13e82841879406bf9f369032656f441a425"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23268.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.11.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.169"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.77"}]},{"type":"ECOSYSTEM","events":[{"introd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