{"id":"CVE-2026-23408","summary":"apparmor: Fix double free of ns_name in aa_replace_profiles()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix double free of ns_name in aa_replace_profiles()\n\nif ns_name is NULL after\n1071         error = aa_unpack(udata, &lh, &ns_name);\n\nand if ent-\u003ens_name contains an ns_name in\n1089                 } else if (ent-\u003ens_name) {\n\nthen ns_name is assigned the ent-\u003ens_name\n1095                         ns_name = ent-\u003ens_name;\n\nhowever ent-\u003ens_name is freed at\n1262                 aa_load_ent_free(ent);\n\nand then again when freeing ns_name at\n1270         kfree(ns_name);\n\nFix this by NULLing out ent-\u003ens_name after it is transferred to ns_name\n\n\")","modified":"2026-04-03T11:03:46.624549Z","published":"2026-04-01T08:36:37.873Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23408.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387"},{"type":"WEB","url":"https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23408.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23408"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"145a0ef21c8e944957f58e2c8ffcd8a10f46266a"},{"fixed":"55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a"},{"fixed":"86feeccd6b93ed94bd6655f30de80f163f8d5a45"},{"fixed":"7998ab3010d2317643f91828f1853d954ef31387"},{"fixed":"18b5233e860c294a847ee07869d93c0b8673a54b"},{"fixed":"5df0c44e8f5f619d3beb871207aded7c78414502"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23408.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.77"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23408.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}