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OpenAdvisories
Critical RHSA-2026:49213 4 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Aug 1, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.150.1.rt7.491.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.150.1.rt7.491.el8_10

Vulnerabilities 4

  • Critical 9.8
    CVE-2026-64530

    net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle

    In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle tcf_classify() can return TC_ACT_CONSUMED while the skb is held by the defragmentation engine (e.g. act_ct on out-of-order frag…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-43116

    netfilter: ctnetlink: ensure safe access to master conntrack

    In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: ensure safe access to master conntrack Holding reference on the expectation is not sufficient, the master conntrack object can just go away, making exp->master invalid. …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2026-46150

    fanotify: fix false positive on permission events

    In the Linux kernel, the following vulnerability has been resolved: fanotify: fix false positive on permission events fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check. Fix by skipping …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-31692

    rtnetlink: add missing netlink_ns_capable() check for peer netns

    In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlink_ns_capable() check for peer netns rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan,…

    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=2464093
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2467005
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482612
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2504052
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2507345
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_49213.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-31692
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31692
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31692
  • article
    https://lore.kernel.org/linux-cve-announce/2026043054-CVE-2026-31692-5f89@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-43116
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43116
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-43116
  • article
    https://kernelcve.org/list/?q=CVE-2026-43116
  • article
    https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43116-08a5@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46150
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46150
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46150
  • article
    https://lore.kernel.org/linux-cve-announce/2026052822-CVE-2026-46150-c96d@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-64530
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-64530
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-64530
  • article
    https://lore.kernel.org/linux-cve-announce/2026072624-CVE-2026-64530-52e9@gregkh/T/#u