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OpenAdvisories
High RHSA-2026:41234 4 CVEs

Red Hat Security Advisory: kernel-rt security update

Published Jul 18, 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 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-debuginfo 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debug-devel 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-debuginfo-common-x86_64 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-devel 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-doc 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-debuginfo 0:3.10.0-1160.156.1.rt56.1308.el7
Red Hat · Rhel Extras Rt Els 7 rhel_extras_rt_els:7 kernel-rt-trace-devel 0:3.10.0-1160.156.1.rt56.1308.el7

Vulnerabilities 4

  • High 7.8
    CVE-2026-43499 Public exploit

    rtmutex: Use waiter::task instead of current in remove_waiter()

    In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-46116

    xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete

    In the Linux kernel, the following vulnerability has been resolved: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete KASAN reproduces a slab-use-after-free in __xfrm_state_delete()'s hlist_del_rcu calls under syzkaller load on linux-6.12.y sta…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-31684

    net: sched: act_csum: validate nested VLAN headers

    In the Linux kernel, the following vulnerability has been resolved: net: sched: act_csum: validate nested VLAN headers tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-53166 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

    linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2461757
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2480453
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482523
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492805
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_41234.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-31684
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31684
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31684
  • article
    https://lore.kernel.org/linux-cve-announce/2026042545-CVE-2026-31684-6974@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-43499
  • article
    https://access.redhat.com/security/vulnerabilities/RHSB-2026-010
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43499
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-43499
  • article
    https://lore.kernel.org/linux-cve-announce/2026052158-CVE-2026-43499-1294@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46116
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46116
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46116
  • article
    https://lore.kernel.org/linux-cve-announce/2026052814-CVE-2026-46116-73b8@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-53166
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-53166
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-53166
  • article
    https://lore.kernel.org/linux-cve-announce/2026062551-CVE-2026-53166-2861@gregkh/T