{"id":"ALSA-2023:4541","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: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)\n* kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281)\n* kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)\n* kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)\n* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)\n* kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer() (CVE-2023-2194)\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.","modified":"2026-02-04T04:16:19.661398Z","published":"2023-08-08T00:00:00Z","related":["CVE-2022-42896","CVE-2023-1281","CVE-2023-1829","CVE-2023-2124","CVE-2023-2194","CVE-2023-2235"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:4541"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2022-42896"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-1281"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-1829"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-2124"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-2194"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-2235"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2147364"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2181847"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2187439"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2188396"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2188470"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2192589"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2023-4541.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.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":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.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":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.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":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.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":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.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":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.json"}},{"package":{"name":"kernel-rt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.json"}},{"package":{"name":"kernel-rt-kvm","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-kvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:4541.json"}},{"package":{"name":"kernel-rt-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-477.21.1.rt7.284.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories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