Skip to content
OpenAdvisories
High ELSA-2026-82807 9 CVEs

Important: kernel security update (Oracle Linux 8)

Published Oct 14, 2026 · Updated Oct 14, 2026

Summary

[4.18.0-553.173.1]
- Update Oracle Linux certificates (Kevin Lyons)
- Disable signing for aarch64 (Ilya Okomin)
- Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list (olkmod_signing_key.pem) [Orabug: 29539237]
- Update x509.genkey [Orabug: 24817676]
- Conflict with shim-ia32 and shim-x64 <= 15.3-1.0.3
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34750652]
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985772]

[4.18.0-553.173.1]
- drm/amdkfd: Add TLB flush after MES queue eviction/suspension (Jocelyn Falempe) [RHEL-262108] {CVE-2026-89811}
- drm/amd/display: set new_stream to NULL after release (Jocelyn Falempe) [RHEL-260521] {CVE-2026-68236}
- drm/vmwgfx: use check_add_overflow for shader size+offset bound (Jocelyn Falempe) [RHEL-258131] {CVE-2026-80887}
- drm/amdgpu/vce: fix integer overflow in image size (Jocelyn Falempe) [RHEL-237823 RHEL-268877] {CVE-2026-68108}
- drm/dp/mst: fix buffer overflows in sideband chunk accumulation (Jocelyn Falempe) [RHEL-240862] {CVE-2026-68278}
- ipv6: validate extension header length before copying to cmsg (Antoine Tenart) [RHEL-225371] {CVE-2026-63920}
- wifi: mac80211: defer link RX stats percpu free to RCU (CKI Backport Bot) [RHEL-263760] {CVE-2026-68409}
- cifs: validate DFS referral string offsets (CKI Backport Bot) [RHEL-261990] {CVE-2026-72318}
- openvswitch: vport: fix self-deadlock on release of tunnel ports (Timothy Redaelli) [RHEL-253844] {CVE-2026-31678}
- openvswitch: defer tunnel netdev_put to RCU release (Timothy Redaelli) [RHEL-253844] {CVE-2026-31678}

Fixed packages 20

ReleasePackageFixed in
Oracle Linux · 8 bpftool 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-abi-stablelists 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-core 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-cross-headers 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-debug 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-debug-core 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-debug-devel 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-debug-modules 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-debug-modules-extra 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-devel 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-doc 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-headers 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-modules 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-modules-extra 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-tools 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-tools-libs 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 kernel-tools-libs-devel 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 perf 0:4.18.0-553.173.1.el8_10
Oracle Linux · 8 python3-perf 0:4.18.0-553.173.1.el8_10

Vulnerabilities 9

  • Critical 9.4

    cifs: validate DFS referral string offsets

    In the Linux kernel, the following vulnerability has been resolved: cifs: validate DFS referral string offsets parse_dfs_referrals() validates that the response header and referral array fit in the received buffer, but each referral also contains string offse…

  • High 8.8

    drm/amdgpu/vce: fix integer overflow in image size

    In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vce: fix integer overflow in image size Fix a security vulnerability where malicious VCE command streams with oversized dimensions (e.g. 65536×65536) cause 32-bit integer overflow,…

  • High 8.8

    wifi: mac80211: defer link RX stats percpu free to RCU

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: defer link RX stats percpu free to RCU sta_remove_link() frees a removed MLO link's RX stats percpu buffer right away, but defers only the link container to RCU: sta_info_free…

  • High 8.8

    drm/amdkfd: Add TLB flush after MES queue eviction/suspension

    In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Add TLB flush after MES queue eviction/suspension MES (Micro Engine Scheduler) does not perform heavy-weight TLB invalidation after unmapping queues, unlike HWS which does this au…

  • High 7.8

    openvswitch: defer tunnel netdev_put to RCU release

    In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdev_put to RCU release ovs_netdev_tunnel_destroy() may run after NETDEV_UNREGISTER already detached the device. Dropping the netdev reference in destroy can race …

  • High 7.8

    drm/amd/display: set new_stream to NULL after release

    In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: set new_stream to NULL after release In dm_update_crtc_state(), the skip_modeset path releases new_stream via dc_stream_release() but does not set the pointer to NULL. If a l…

  • High 7.1

    ipv6: validate extension header length before copying to cmsg

    In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6_datagram_recv_specific_ctl() builds IPV6_{HOPOPTS,DSTOPTS,RTHDR} cmsgs (and their IPV6_2292* legacy counterparts) by trusting…

  • Unscored —

    drm/dp/mst: fix buffer overflows in sideband chunk accumulation

    In the Linux kernel, the following vulnerability has been resolved: drm/dp/mst: fix buffer overflows in sideband chunk accumulation drm_dp_sideband_append_payload() has three related bugs when processing device-provided sideband reply data: 1. Zero-length cur…

  • Unscored —

    drm/vmwgfx: use check_add_overflow for shader size+offset bound

    In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size < (u64…