{"id":"RLSA-2026:55764","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: mm/slub: avoid accessing metadata when pointer is invalid in object_err() (CVE-2025-39902)\n\n* kernel: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CVE-2026-43206)\n\n* kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)\n\n* kernel: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CVE-2026-53136)\n\n* kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CVE-2026-53329)\n\n* kernel: drm/amdgpu: zero-initialize GART table on allocation (CVE-2026-53374)\n\n* kernel: drm/i915: Fix potential UAF in TTM object purge (CVE-2026-63884)\n\n* kernel: drm/amdgpu: fix amdgpu_hmm_range_get_pages (CVE-2026-63879)\n\n* kernel: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async (CVE-2026-64219)\n\n* kernel: can:bcm: arbitrary kernel code execution leading to escalate privileges (CVE-2026-17523)\n\nBug Fix(es) and Enhancement(s):\n\n* Backport \"sched/deadline: Fix bandwidth reclaim equation in GRUB\" to Rocky Linux 8.10 (JIRA:Rocky Linux-189997)\n\n* vhost: reset the vring metadata cache on vring reconfiguration [rhel-8.10.z] (JIRA:Rocky Linux-224556)\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":"2026-08-18T06:30:06.266713605Z","published":"2026-08-18T06:00:58.283966Z","upstream":["CVE-2025-39902","CVE-2026-17523","CVE-2026-43206","CVE-2026-53016","CVE-2026-53136","CVE-2026-53329","CVE-2026-53374","CVE-2026-63879","CVE-2026-63884","CVE-2026-64219"],"database_specific":{"source_advisory":"RHSA-2026:55764","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:55764"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2400594"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467156"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492269"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492768"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2495941"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502188"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502321"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502463"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2506790"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507407"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:55764"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-553.156.1.el8_10"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:55764.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"}]}