RHSA-2026:99031: Moderate: kernel-rt security, bug fix, and enhancement update

Published Nov 11, 2026
·
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: drm/amdkfd: hold eventmutex while checkpointing CRIU events (CVE-2026-74446) kernel: drm/amdkfd: fix SMI event cross-process information leak (CVE-2026-97422) kernel: drm/amd/pm: bound ppdpmsetpptable() memcpy (CVE-2026-97427) kernel: drm/amdkfd: Check bounds for allocatesdmaqueue restoresdmaid (CVE-2026-97497) kernel: drm/amdgpu: validate and share PSP fwpribuf copies via pspcopyfw (CVE-2026-97494) kernel: drm/amdkfd: Check bounds on allocatedoorbell (CVE-2026-97495) kernel: drm/amdgpu: Bound GPIO I2C table entry count from VBIOS (CVE-2026-97493) kernel: drm/amdgpu: fix buffer overflow during vBIOS update (CVE-2026-97425) kernel: net/smc: protect clcsock lifetime in smcgetname (CVE-2026-99032) kernel: kernel: Denial of Service via use-after-free race condition in SCSI tape driver (CVE-2026-99156) Bug Fix(es) and Enhancement(s): soft lockup occurs during iomapfinishioends (JIRA:RHEL-258946) gfs2: BUG during withdraw [RHEL-8] (JIRA:RHEL-298310) 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.

Affected Software

15 affected componentsFixes available
redhat/kernel-rt<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-core<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-core<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-debuginfo<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-devel<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-modules<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-modules-extra<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debuginfo<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-devel<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-modules<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-modules-extra<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-debug-kvm<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10
redhat/kernel-rt-kvm<4.18.0-553.186.1.rt7.527.el8_10
4.18.0-553.186.1.rt7.527.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  2. Upgrade

    Upgrade redhat/kernel-rt-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  3. Upgrade

    Upgrade redhat/kernel-rt-debug to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  4. Upgrade

    Upgrade redhat/kernel-rt-debug-core to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  5. Upgrade

    Upgrade redhat/kernel-rt-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  6. Upgrade

    Upgrade redhat/kernel-rt-debug-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  7. Upgrade

    Upgrade redhat/kernel-rt-debug-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  8. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  9. Upgrade

    Upgrade redhat/kernel-rt-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  10. Upgrade

    Upgrade redhat/kernel-rt-devel to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  11. Upgrade

    Upgrade redhat/kernel-rt-modules to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  12. Upgrade

    Upgrade redhat/kernel-rt-modules-extra to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  13. Upgrade

    Upgrade redhat/kernel-rt-debug-kvm to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  14. Upgrade

    Upgrade redhat/kernel-rt-kvm to a version that resolves this vulnerability.

    Fixed in 4.18.0-553.186.1.rt7.527.el8_10
  15. Operational

    Reboot the system for the kernel update to take effect.

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Company

Resources

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