{"id":"RLSA-2026:72623","summary":"Important: kernel security, bug fix, and enhancement update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)\n\n* kernel: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE (CVE-2026-46325)\n\n* kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000 (CVE-2026-52972)\n\n* kernel: fhandle: fix UAF due to unlocked -\u003emnt_ns read in may_decode_fh() (CVE-2026-53341)\n\n* kernel: arm64: tlb: Flush walk cache when unsharing PMD tables (CVE-2026-63875)\n\n* kernel: RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CVE-2026-64102)\n\n* kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)\n\n* kernel: crypto: tegra - fix rctx-\u003ecryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)\n\n* kernel: perf: Reject exited events as group leaders (CVE-2026-74753)\n\nBug Fix(es) and Enhancement(s):\n\n* KVM: s390: Limit adapter indicator access to mapped page [rhel-9.8.z] (JIRA:Rocky Linux-188656)\n\n* crypto: xxhash64 should not be fips approved [rhel-9.8.z] (JIRA:Rocky Linux-256437)\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":"2026-09-30T12:45:02.512016964Z","published":"2026-09-30T12:05:19.277561Z","upstream":["CVE-2026-45942","CVE-2026-46325","CVE-2026-52972","CVE-2026-53341","CVE-2026-63875","CVE-2026-64102","CVE-2026-64556","CVE-2026-74753","CVE-2026-80522"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:72623"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:72623"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2482104"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487002"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492364"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2495938"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502318"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502494"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2508319"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2524423"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2524434"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72623"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:5.14.0-687.53.1.el9_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:72623.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}