ALSA-2026:95100: Important: kernel-rt security, bug fix, and enhancement update

Published Nov 4, 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: sctp: stream: fully roll back denied add-stream state (CVE-2026-52929) kernel: net/smc: fix UAF in smccdcrxhandler() by pinning the socket (CVE-2026-64541) kernel: sctp: clear newtransport when removing a peer (CVE-2026-74586) kernel: RDMA/rxe: Fix responder UAF on IBQPMAXDESTRDATOMIC modifyqp (CVE-2026-80864) kernel: RDMA/rxe: Fix OOB in freerdatomicresources() (CVE-2026-80863) kernel: openvswitch: Fix CT limit teardown use-after-free (CVE-2026-89488)

Bug Fix(es) and Enhancement(s):

AlmaLinux8.10 - s390/smp: Remove conditional emergency signal usage (JIRA:RHEL-298849)

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<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-core<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-debug<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-debug-core<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-debug-devel<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-debug-modules<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-debug-modules-extra<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-devel<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-modules<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.el8_10
almalinux/kernel-rt-modules-extra<4.18.0-553.184.1.rt7.525.el8_10
4.18.0-553.184.1.rt7.525.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 4.18.0-553.184.1.rt7.525.el8_10
  2. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  3. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  4. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  5. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  6. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  7. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  8. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  9. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10
  10. Upgrade

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

    Fixed in 4.18.0-553.184.1.rt7.525.el8_10

Event History

Nov 4, 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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