{"id":"ALSA-2023:1584","summary":"Important: kernel-rt security and bug fix update","details":"The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)\n* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)\n* kernel: FUSE filesystem low-privileged user privileges escalation (CVE-2023-0386)\n* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* Lazy irq_work does not raise softirq on PREEMPT_RT [almalinux-8] (BZ#2172163)\n* The latest AlmaLinux 8.7.z3 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2172278)","modified":"2026-02-04T03:52:35.480018Z","published":"2023-04-04T00:00:00Z","related":["CVE-2022-4269","CVE-2022-4378","CVE-2023-0266","CVE-2023-0386"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:1584"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2022-4269"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2022-4378"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-0266"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-0386"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2150272"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2152548"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2159505"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2163379"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2023-1584.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug-kvm","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-kvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-debug-modules-extra","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-kvm","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-kvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:1584.json"}},{"package":{"name":"kernel-rt-modules-extra","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-425.19.2.rt7.230.el8_7"}]}],"database_specific":{"source":"https://github.com/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