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OpenAdvisories
High RHSA-2025:23424 5 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Dec 17, 2025 · Updated Oct 2, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-core 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-core 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-debuginfo 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-devel 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-kvm 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules-extra 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-devel 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-kvm 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules-extra 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-core 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-core 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-debuginfo 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-devel 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules-extra 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-devel 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules 0:5.14.0-70.158.1.rt21.230.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules-extra 0:5.14.0-70.158.1.rt21.230.el9_0

Vulnerabilities 5

  • High 8.8
    CVE-2023-53322

    scsi: qla2xxx: Wait for io return on terminate rport

    In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 devi…

    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 8.1
    CVE-2025-40186

    tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().

    In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request(). syzbot reported the splat below in tcp_conn_request(). [0] If a listener is close()d while a TFO socket is being processed in tc…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2023-53513

    nbd: fix incomplete validation of ioctl arg

    In the Linux kernel, the following vulnerability has been resolved: nbd: fix incomplete validation of ioctl arg We tested and found an alarm caused by nbd_ioctl arg without verification. The UBSAN warning calltrace like below: UBSAN: Undefined behaviour in fs…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-39955

    tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().

    In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). syzbot reported the splat below where a socket had tcp_sk(sk)->fastopen_rsk in the TCP_ESTABLISHED state. [0] syzbot reused the server…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395891
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396934
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2400795
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2402699
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2414724
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_23424.json
  • report
    https://access.redhat.com/security/cve/CVE-2023-53322
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53322
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53322
  • article
    https://lore.kernel.org/linux-cve-announce/2025091644-CVE-2023-53322-45ba@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53513
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53513
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53513
  • article
    https://lore.kernel.org/linux-cve-announce/2025100130-CVE-2023-53513-4667@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
  • report
    https://access.redhat.com/security/cve/CVE-2025-39955
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39955
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39955
  • article
    https://lore.kernel.org/linux-cve-announce/2025100942-CVE-2025-39955-f36b@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-40186
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40186
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40186
  • article
    https://lore.kernel.org/linux-cve-announce/2025111244-CVE-2025-40186-b204@gregkh/T