RLSA-2026:82806
Important: kernel-rt security update
Published Oct 15, 2026 · updated Oct 15, 2026
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678) * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) * kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236) * kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278) * kernel: wifi: mac80211: defer link RX stats percpu free to RCU (CVE-2026-68409) * kernel: drm/amdgpu/vce: fix integer overflow in image size (CVE-2026-68108) * kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887) * kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811) 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.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 15, 2026 · OSV.dev
Detected
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678) * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) * kernel: drm/amd/display: set new_stream to NULL after release (CVE-20
Oct 15, 2026 · OSV.dev
Fix available
kernel-rt fixed in 0:4.18.0-553.173.1.rt7.514.el8_10
Oct 15, 2026 · OSV.dev
Fix available
kernel-rt fixed in 0:4.18.0-553.173.1.rt7.514.el8_10
Oct 15, 2026 · OSV.dev
Updated
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678) * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) * kernel: drm/amd/display: set new_stream to NULL after release (CVE-20
Affected
- Rocky Linux:8 kernel-rt0 → 0:4.18.0-553.173.1.rt7.514.el8_10