ALSA-2026:87374: Important: kernel-rt security update

Published Oct 21, 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: ipv4: raw: reject IPHDRINCL packets with ihl < 5 (CVE-2026-64114) kernel: fuse: re-lock request before returning from fusereffolio() (CVE-2026-64266) kernel: ipv4: fib: free fibalias with kfreercu() on insert error path (CVE-2026-64572) kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202) kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536) kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590) kernel: vfio/pci: clear vdev->msiperm after freeing it on init failure (CVE-2026-89777)

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

10 affected componentsFixes available
almalinux/kernel-rt<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-core<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-debug<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-debug-core<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-debug-devel<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-debug-modules<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-debug-modules-extra<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-devel<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-modules<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10
almalinux/kernel-rt-modules-extra<4.18.0-553.177.1.rt7.518.el8_10
4.18.0-553.177.1.rt7.518.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  2. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  3. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  4. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  5. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  6. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  7. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  8. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  9. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10
  10. Upgrade

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

    Fixed in 4.18.0-553.177.1.rt7.518.el8_10

Event History

Oct 21, 2026
Advisory Published
via OSV·12:00 AM
Data Sourced
via OSV·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Company

Resources

Contact

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