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OpenAdvisories
High RHSA-2025:9493 3 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Jun 24, 2025 · Updated Aug 16, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-core 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-core 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-debuginfo 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-devel 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-kvm 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debug-modules-extra 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-devel 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-kvm 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::nfv kernel-rt-modules-extra 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-core 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-core 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-debuginfo 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-devel 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debug-modules-extra 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-debuginfo-common-x86_64 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-devel 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules 0:5.14.0-70.134.1.rt21.206.el9_0
Red Hat · RHEL 9.0 E4S rhel_e4s:9.0::realtime kernel-rt-modules-extra 0:5.14.0-70.134.1.rt21.206.el9_0

Vulnerabilities 3

  • High 8.8
    CVE-2022-49328

    mt76: fix use-after-free by removing a non-RCU wcid pointer

    In the Linux kernel, the following vulnerability has been resolved: mt76: fix use-after-free by removing a non-RCU wcid pointer Fixes an issue caught by KASAN about use-after-free in mt76_txq_schedule by protecting mtxq->wcid with rcu_lock between mt76_txq_sc…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2022-49696

    tipc: fix use-after-free Read in tipc_named_reinit

    In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free Read in tipc_named_reinit syzbot found the following issue on: ================================================================== BUG: KASAN: use-after-free in tipc_n…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-21764

    ndisc: use RCU protection in ndisc_alloc_skb()

    In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.

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

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2347851
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2348217
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2348575
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_9493.json
  • report
    https://access.redhat.com/security/cve/CVE-2022-49328
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-49328
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-49328
  • article
    https://lore.kernel.org/linux-cve-announce/2025022638-CVE-2022-49328-ec2f@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2022-49696
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-49696
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-49696
  • article
    https://lore.kernel.org/linux-cve-announce/2025022628-CVE-2022-49696-c188@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-21764
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-21764
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-21764
  • article
    https://lore.kernel.org/linux-cve-announce/2025022605-CVE-2025-21764-1061@gregkh/T