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High ALSA-2026:82807 9 CVEs

Important: kernel security update

Published Oct 14, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

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: cifs: validate DFS referral string offsets (CVE-2026-72318)
* 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.

Fixed packages 25

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

Vulnerabilities 9

  • Critical 9.4
    CVE-2026-72318

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.8
    CVE-2026-68108

    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,…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.8
    CVE-2026-68409

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.8
    CVE-2026-89811

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-31678

    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 …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-68236

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2026-63920

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-68278

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-80887

    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…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-31678
  • report
    https://access.redhat.com/security/cve/CVE-2026-63920
  • report
    https://access.redhat.com/security/cve/CVE-2026-68108
  • report
    https://access.redhat.com/security/cve/CVE-2026-68236
  • report
    https://access.redhat.com/security/cve/CVE-2026-68278
  • report
    https://access.redhat.com/security/cve/CVE-2026-68409
  • report
    https://access.redhat.com/security/cve/CVE-2026-72318
  • report
    https://access.redhat.com/security/cve/CVE-2026-80887
  • report
    https://access.redhat.com/security/cve/CVE-2026-89811
  • report
    https://bugzilla.redhat.com/2461761
  • report
    https://bugzilla.redhat.com/2502330
  • report
    https://bugzilla.redhat.com/2513148
  • report
    https://bugzilla.redhat.com/2513287
  • report
    https://bugzilla.redhat.com/2513299
  • report
    https://bugzilla.redhat.com/2513361
  • report
    https://bugzilla.redhat.com/2516396
  • report
    https://bugzilla.redhat.com/2528788
  • report
    https://bugzilla.redhat.com/2535309
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-82807.html