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OpenAdvisories
Critical RHSA-2026:63539 1 CVE

Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

Published Sep 5, 2026 · Updated Sep 30, 2026

Ecosystem: Red Hat

Fixed packages 11

ReleasePackageFixed in
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-debuginfo 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-devel 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo-common-x86_64 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-devel 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-doc 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-debuginfo 0:3.10.0-1160.160.1.rt56.1312.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-devel 0:3.10.0-1160.160.1.rt56.1312.el7

Vulnerabilities 1

  • Critical 9.8
    CVE-2026-74480

    net: bridge: stop fast-leave after deleting a port group

    In the Linux kernel, the following vulnerability has been resolved: net: bridge: stop fast-leave after deleting a port group br_multicast_leave_group() iterates mp->ports with pp = &p->next in its fast-leave path. After br_multicast_del_pg() removes p, contin…

    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=2517046
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_63539.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-74480
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74480
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74480
  • article
    https://lore.kernel.org/linux-cve-announce/2026081536-CVE-2026-74480-e620@gregkh/T