Issued at: 2026-08-18
Updated at: 2026-08-18
Advisory content derived from Red Hat RHSA-2026:55764, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel security, bug fix, and enhancement update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: mm/slub: avoid accessing metadata when pointer is invalid in object_err() (CVE-2025-39902)
* kernel: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CVE-2026-43206)
* kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016)
* kernel: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CVE-2026-53136)
* kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CVE-2026-53329)
* kernel: drm/amdgpu: zero-initialize GART table on allocation (CVE-2026-53374)
* kernel: drm/i915: Fix potential UAF in TTM object purge (CVE-2026-63884)
* kernel: drm/amdgpu: fix amdgpu_hmm_range_get_pages (CVE-2026-63879)
* kernel: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async (CVE-2026-64219)
* kernel: can:bcm: arbitrary kernel code execution leading to escalate privileges (CVE-2026-17523)
Bug Fix(es) and Enhancement(s):
* Backport "sched/deadline: Fix bandwidth reclaim equation in GRUB" to Rocky Linux 8.10 (JIRA:Rocky Linux-189997)
* vhost: reset the vring metadata cache on vring reconfiguration [rhel-8.10.z] (JIRA:Rocky Linux-224556)
For 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.