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High ALSA-2023:3350 1 CVE

Important: kernel-rt security and bug fix update

Published May 30, 2023 · Updated Oct 29, 2026

Summary

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: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)

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.

Bug Fix(es):

* smpboot: Scheduler frequency invariance went wobbly, disabling! (BZ#2188316)
* Crash: kernel BUG at kernel/locking/rtmutex.c:1338! (BZ#2188722)
* kernel-rt: update RT source tree to the AlmaLinux-8.8.z0 source tree. (BZ#2196667)

Fixed packages 12

ReleasePackageFixed in
AlmaLinux · 8 kernel-rt 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-core 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug-core 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug-devel 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug-kvm 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug-modules 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-debug-modules-extra 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-devel 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-kvm 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-modules 4.18.0-477.13.1.rt7.276.el8_8
AlmaLinux · 8 kernel-rt-modules-extra 4.18.0-477.13.1.rt7.276.el8_8

Vulnerabilities 1

References

  • report
    https://access.redhat.com/security/cve/CVE-2023-32233
  • report
    https://bugzilla.redhat.com/2196105
  • advisory
    https://errata.almalinux.org/8/ALSA-2023-3350.html