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OpenAdvisories
Critical RHSA-2026:1946 4 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Feb 5, 2026 · Updated Sep 27, 2026

Ecosystem: Red Hat

Fixed packages 32

ReleasePackageFixed in
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-debuginfo 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-devel 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-kvm 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-modules 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-modules-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debug-modules-extra 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debuginfo 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-debuginfo-common-x86_64 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-devel 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-kvm 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-modules 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-modules-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::nfv kernel-rt-modules-extra 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-debuginfo 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-devel 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-modules 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-modules-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debug-modules-extra 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debuginfo 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-debuginfo-common-x86_64 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-devel 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-modules 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-modules-core 0:5.14.0-284.155.1.rt14.440.el9_2
Red Hat · RHEL 9.2 E4S rhel_e4s:9.2::realtime kernel-rt-modules-extra 0:5.14.0-284.155.1.rt14.440.el9_2

Vulnerabilities 4

  • Critical 9.8
    CVE-2023-53751

    cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname

    In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2025-68301

    net: atlantic: fix fragment overflow handling in RX path

    In the Linux kernel, the following vulnerability has been resolved: net: atlantic: fix fragment overflow handling in RX path The atlantic driver can receive packets with more than MAX_SKB_FRAGS (17) fragments when handling large multi-descriptor packets. This…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-40248

    vsock: Ignore signal/timeout on connect() if already established

    In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect() if already established During connect(), acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connec…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2022-50865

    tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

    In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_r…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2418872
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2419858
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2422836
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2426226
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1946.json
  • report
    https://access.redhat.com/security/cve/CVE-2022-50865
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-50865
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-50865
  • article
    https://lore.kernel.org/linux-cve-announce/2025123049-CVE-2022-50865-281e@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53751
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53751
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53751
  • article
    https://lore.kernel.org/linux-cve-announce/2025120842-CVE-2023-53751-2ff2@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-40248
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40248
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40248
  • article
    https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-68301
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-68301
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-68301
  • article
    https://lore.kernel.org/linux-cve-announce/2025121643-CVE-2025-68301-be31@gregkh/T