{"schema_version": "1.7.0", "id": "RLSA-2026:63013", "modified": "2026-09-04T12:13:14.262370Z", "published": "2026-09-04T12:02:30.325508Z", "upstream": ["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"], "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\n* kernel: smc91x: fix broken irq-context in PREEMPT_RT (CVE-2025-71132)\n\n* kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)\n\n* kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)\n\n* kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)\n\n* kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)\n\n* kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)\n\n* kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)\n\n* kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)\n\n* kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)\n\n* kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)\n\n* kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)\n\n* kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)\n\n* kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer (CVE-2026-74581)\n\nBug Fix(es) and Enhancement(s):\n\n* qede: build_skb failure causes off-by-one BD ring corruption and kernel panic [rhel-8.10.z] (JIRA:Rocky Linux-193045)\n\n* powerpc/pseries: lparcfg - fix kbuf[] underflow (JIRA:Rocky Linux-240144)\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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:8", "name": "kernel-rt", "purl": "pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:4.18.0-553.159.1.rt7.500.el8_10"}], "database_specific": {"yum_repository": "NFV"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:63013"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2337144"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429603"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482006"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492735"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502219"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502227"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502239"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502240"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502260"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502421"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507089"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507208"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508363"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520980"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:63013"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:63013"}}