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OpenAdvisories
Critical RHSA-2026:95100 6 CVEs

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

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 28

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-core 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-core 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-debuginfo 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-devel 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-kvm 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debug-modules-extra 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-devel 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-kvm 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::nfv kernel-rt-modules-extra 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-core 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-core 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-debuginfo 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-devel 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debug-modules-extra 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-debuginfo-common-x86_64 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-devel 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules 0:4.18.0-553.184.1.rt7.525.el8_10
Red Hat · RHEL 8 enterprise_linux:8::realtime kernel-rt-modules-extra 0:4.18.0-553.184.1.rt7.525.el8_10

Vulnerabilities 6

  • Critical 9.8
    CVE-2026-64541

    net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket

    In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket smc_cdc_rx_handler() looks up the connection by token under the link group's conns_lock, drops the lock, and then dereferences c…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-74586 Public exploit

    sctp: clear new_transport when removing a peer

    In the Linux kernel, the following vulnerability has been resolved: sctp: clear new_transport when removing a peer sctp_process_asconf_param() stores a newly added peer transport in asoc->new_transport. After all parameters in the ASCONF chunk have been proce…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-89488

    openvswitch: Fix CT limit teardown use-after-free

    In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovs_mutex. The CT limit pointer was neither remo…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2026-52929

    sctp: stream: fully roll back denied add-stream state

    In the Linux kernel, the following vulnerability has been resolved: sctp: stream: fully roll back denied add-stream state When ADD_OUT_STREAMS is denied, SCTP only shrinks the queued chunks and then lowers outcnt. That leaves removed stream metadata behind, s…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-80863

    RDMA/rxe: Fix OOB in free_rd_atomic_resources()

    In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix OOB in free_rd_atomic_resources() free_rd_atomic_resources() iterates using qp->attr.max_dest_rd_atomic. Updating max_dest_rd_atomic before freeing the old array can make the fr…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-80864

    RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp

    In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp rxe_qp_from_attr() handles IB_QP_MAX_DEST_RD_ATOMIC outside the IB_QP_STATE path, so it holds no state_lock and runs while th…

    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=2492108
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2507721
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2521419
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2528646
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2528665
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532407
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_95100.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-52929
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-52929
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-52929
  • article
    https://lore.kernel.org/linux-cve-announce/2026062432-CVE-2026-52929-63ee@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-64541
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-64541
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-64541
  • article
    https://kernelcve.org/list/?q=CVE-2026-64541
  • article
    https://lore.kernel.org/linux-cve-announce/2026072735-CVE-2026-64541-21ef@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-74586
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74586
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74586
  • article
    https://lore.kernel.org/linux-cve-announce/2026082212-CVE-2026-74586-9beb@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-80863
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-80863
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-80863
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80863.mbox
  • report
    https://access.redhat.com/security/cve/CVE-2026-80864
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-80864
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-80864
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80864.mbox
  • report
    https://access.redhat.com/security/cve/CVE-2026-89488
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-89488
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-89488
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89488.mbox