{"schema_version":"1.7.5","id":"SUSE-SU-2026:1077-1","published":"2026-03-26T12:42:31Z","modified":"2026-03-27T08:48:32.830261Z","related":["CVE-2025-21738","CVE-2025-40242","CVE-2025-71066","CVE-2026-23004","CVE-2026-23054","CVE-2026-23060","CVE-2026-23074","CVE-2026-23089","CVE-2026-23191","CVE-2026-23204","CVE-2026-23209","CVE-2026-23268","CVE-2026-23269"],"upstream":["CVE-2025-21738","CVE-2025-40242","CVE-2025-71066","CVE-2026-23004","CVE-2026-23054","CVE-2026-23060","CVE-2026-23074","CVE-2026-23089","CVE-2026-23191","CVE-2026-23204","CVE-2026-23209","CVE-2026-23268","CVE-2026-23269"],"summary":"Security update for the Linux Kernel","details":"\nThe SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues\n\nThe following security issues were fixed:\n\n- CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917).\n- CVE-2025-40242: gfs2: Fix unlikely race in gdlm_put_lock (bsc#1255075).\n- CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change\n  (bsc#1256645).\n- CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1257231).\n- CVE-2026-23060: crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec (bsc#1257735).\n- CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1257749).\n- CVE-2026-23089: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() (bsc#1257790).\n- CVE-2026-23191: ALSA: aloop: Fix racy access at PCM trigger (bsc#1258395).\n- CVE-2026-23204: net: add skb_header_pointer_careful() helper (bsc#1258340).\n- CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink() (bsc#1258518).\n- CVE-2026-23268: apparmor: fix unprivileged local user can do privileged policy management (bsc#1258850).\n- CVE-2026-23269: apparmor: validate DFA start states are in bounds in unpack_pdb (bsc#1259857).\n\nThe following non security issues were fixed:\n\n- apparmor: fix differential encoding verification (bsc#1258849).\n- apparmor: Fix double free of ns_name in aa_replace_profiles() (bsc#1258849).\n- apparmor: fix memory leak in verify_header (bsc#1258849).\n- apparmor: fix missing bounds check on DEFAULT table in verify_dfa() (bsc#1258849).\n- apparmor: fix race between freeing data and fs accessing it (bsc#1258849).\n- apparmor: fix race on rawdata dereference (bsc#1258849).\n- apparmor: fix side-effect bug in match_char() macro usage (bsc#1258849).\n- apparmor: fix unprivileged local user can do privileged policy management (bsc#1258849).\n- apparmor: fix: limit the number of levels of policy namespaces (bsc#1258849).\n- apparmor: replace recursive profile removal with iterative approach (bsc#1258849).\n- apparmor: validate DFA start states are in bounds in unpack_pdb (bsc#1258849).\n","affected":[{"package":{"name":"kernel-rt","ecosystem":"SUSE:Linux Enterprise Micro 5.5","purl":"pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.21-150500.13.124.1"}]}],"ecosystem_specific":{"binaries":[{"kernel-devel-rt":"5.14.21-150500.13.124.1","kernel-rt":"5.14.21-150500.13.124.1","kernel-source-rt":"5.14.21-150500.13.124.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:1077-1.json"}},{"package":{"name":"kernel-source-rt","ecosystem":"SUSE:Linux Enterprise Micro 5.5","purl":"pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.21-150500.13.124.1"}]}],"ecosystem_specific":{"binaries":[{"kernel-devel-rt":"5.14.21-150500.13.124.1","kernel-rt":"5.14.21-150500.13.124.1","kernel-source-rt":"5.14.21-150500.13.124.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:1077-1.json"}}],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20261077-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1238917"},{"type":"REPORT","url":"https://bugzilla.suse.com/1255075"},{"type":"REPORT","url":"https://bugzilla.suse.com/1256645"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257231"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257473"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257732"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257735"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257749"},{"type":"REPORT","url":"https://bugzilla.suse.com/1257790"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258340"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258395"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258518"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258849"},{"type":"REPORT","url":"https://bugzilla.suse.com/1258850"},{"type":"REPORT","url":"https://bugzilla.suse.com/1259857"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2025-21738"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2025-40242"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2025-71066"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23004"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23054"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23060"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23074"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23089"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23191"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23204"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23209"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23268"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-23269"}]}