{"id":"ALSA-2026:63013","summary":"Important: kernel-rt security, bug fix, and enhancement 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: s390/cpum_sf: Handle CPU hotplug remove during sampling (CVE-2024-57849)\n  * kernel: smc91x: fix broken irq-context in PREEMPT_RT (CVE-2025-71132)\n  * kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)\n  * kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)\n  * kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)\n  * kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)\n  * kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)\n  * kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)\n  * kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)\n  * kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)\n  * kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)\n  * kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)\n  * kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)\n  * kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res-\u003ert6 pointer (CVE-2026-74581)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * qede: build_skb failure causes off-by-one BD ring corruption and kernel panic [almalinux-8.10.z] (JIRA:AlmaLinux-193045)\n  * powerpc/pseries: lparcfg - fix kbuf[] underflow (JIRA:AlmaLinux-240144)\n\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","modified":"2026-09-03T10:56:53.492309601Z","published":"2026-09-03T00:00:00Z","related":["CVE-2024-57849","CVE-2025-71132","CVE-2026-45970","CVE-2026-53185","CVE-2026-53391","CVE-2026-53392","CVE-2026-53397","CVE-2026-53399","CVE-2026-63800","CVE-2026-64018","CVE-2026-64268","CVE-2026-64298","CVE-2026-68480","CVE-2026-74581"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:63013"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2024-57849"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-71132"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-45970"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53185"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53391"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53392"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53397"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53399"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63800"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64018"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64268"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64298"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-68480"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-74581"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2337144"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2429603"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482006"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492735"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502219"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502227"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502239"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502240"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502260"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502421"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507089"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507208"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2508363"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2520980"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-63013.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.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":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.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":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.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":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.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":"4.18.0-553.159.1.rt7.500.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:63013.json"}},{"package":{"name":"kernel-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