RHSA-2026:99031MediumCVSS 7.8

Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

Published
November 11, 2026
Last Modified
November 11, 2026

🔗 CVE IDs covered (10)

CVE-2026-74446 →CVE-2026-97493 →CVE-2026-99032 →CVE-2026-99156 →CVE-2026-97422 →CVE-2026-97425 →CVE-2026-97427 →CVE-2026-97494 →CVE-2026-97495 →CVE-2026-97497 →

📋 Description

CVE-2026-74446 — kernel: drm/amdkfd: hold event_mutex while checkpointing CRIU events CVE-2026-97422 — kernel: drm/amdkfd: fix SMI event cross-process information leak CVE-2026-97425 — kernel: drm/amdgpu: fix buffer overflow during vBIOS update CVE-2026-97427 — kernel: drm/amd/pm: bound pp_dpm_set_pp_table() memcpy CVE-2026-97493 — kernel: drm/amdgpu: Bound GPIO I2C table entry count from VBIOS CVE-2026-97494 — kernel: drm/amdgpu: validate and share PSP fw_pri_buf copies via psp_copy_fw CVE-2026-97495 — kernel: drm/amdkfd: Check bounds on allocate_doorbell CVE-2026-97497 — kernel: drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id CVE-2026-99032 — kernel: net/smc: protect clcsock lifetime in smc_getname CVE-2026-99156 — kernel: kernel: Denial of Service via use-after-free race condition in SCSI tape driver

🎯 Affected products32

  • Red Hat Enterprise Linux NFV (v. 8)
  • Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-0:4.18.0-553.186.1.rt7.527.el8_10.src as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-0:4.18.0-553.186.1.rt7.527.el8_10.src as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-core-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-core-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-core-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-core-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-debuginfo-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-debuginfo-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-devel-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-devel-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-kvm-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-modules-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-modules-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debug-modules-extra-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debug-modules-extra-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debuginfo-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debuginfo-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-devel-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-devel-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • kernel-rt-kvm-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-modules-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
  • kernel-rt-modules-0:4.18.0-553.186.1.rt7.527.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
  • +2 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Workaround: To mitigate this vulnerability, prevent the amdgpu kernel module from loading on systems where AMD GPU compute or display hardware is not required. 1. Blacklist the module by executing the following command as root: # echo "install amdgpu /bin/true" > /etc/modprobe.d/disable-amdgpu.conf 2. If the module is currently loaded into kernel memory, a system reboot is required to fully unload it, or attempt to unload it manually: # rmmod amdgpu Warning: Unloading the kernel module or rebooting the host will interrupt running services and terminate graphical sessions. Caveat: Disabling the amdgpu driver prevents hardware graphics acceleration and compute functionality on systems equipped with AMD Radeon or Instinct GPUs. Ensure alternative console access is available. Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (13)