Skip to content
OpenAdvisories
High RHSA-2025:19440 3 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Nov 3, 2025 · Updated Aug 20, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.82.1.rt7.423.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.82.1.rt7.423.el8_10

Vulnerabilities 3

  • High 8.8
    CVE-2023-53226

    wifi: mwifiex: Fix OOB and integer underflow when rx packets

    In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet, mwifiex_uap_queue_bridged_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.8
    CVE-2025-39864

    wifi: cfg80211: fix use-after-free in cmp_bss()

    In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix use-after-free in cmp_bss() Following bss_free() quirk introduced in commit 776b3580178f ("cfg80211: track hidden SSID networks properly"), adjust cfg80211_update_known_bs…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2023-53257

    wifi: mac80211: check S1G action frame size

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check S1G action frame size Before checking the action code, check that it even exists in the frame.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395253
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395420
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396934
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19440.json
  • report
    https://access.redhat.com/security/cve/CVE-2023-53226
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53226
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53226
  • article
    https://lore.kernel.org/linux-cve-announce/2025091513-CVE-2023-53226-a44a@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53257
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53257
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53257
  • article
    https://lore.kernel.org/linux-cve-announce/2025091503-CVE-2023-53257-6162@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39864
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39864
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39864
  • article
    https://lore.kernel.org/linux-cve-announce/2025091906-CVE-2025-39864-a3a2@gregkh/T