RHSA-2026:95721: Important: kernel-rt security update

Published Nov 5, 2026
·
Updated

Important: kernel-rt security update

Other sources

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.Security Fix(es): kernel: netfilter: nfnetlinkcthelper: fix OOB read in nfnlcthelperdumptable() (CVE-2026-43450) kernel: Bluetooth: hcievent: fix potential UAF in SSP passkey handlers (CVE-2026-46056) kernel: procfs: fix missing RCU protection when reading realparent in dotaskstat() (CVE-2026-46259) kernel: dm cache policy smq: fix missing locks in invalidating cache blocks (CVE-2026-53062) kernel: ipv6: exthdrs: refresh nh pointer after ipv6hopjumbo() (CVE-2026-63924) kernel: ipv6: exthdrs: refresh nh after handling HAO option (CVE-2026-63922) kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) kernel: selinux: check connect-related permissions on TCP Fast Open (CVE-2026-72243) kernel: ipv4: validate checksumstart before completing checksum (CVE-2026-99999) kernel: ZDI-CAN-33367: Linux Kernel skbuff skbzerocopy Improper Ownership Management Local Privilege Escalation Vulnerability () For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

12 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for Real Time for x86_64 - Extended Life Cycle Support
redhat/kernel-rt<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-debug<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-debug-debuginfo<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-debug-devel<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-debuginfo<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-devel<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-doc<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-trace<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-trace-debuginfo<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7
redhat/kernel-rt-trace-devel<3.10.0-1160.169.1.rt56.1321.el7
3.10.0-1160.169.1.rt56.1321.el7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  2. Upgrade

    Upgrade redhat/kernel-rt-debug to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  3. Upgrade

    Upgrade redhat/kernel-rt-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  4. Upgrade

    Upgrade redhat/kernel-rt-debug-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  5. Upgrade

    Upgrade redhat/kernel-rt-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  6. Upgrade

    Upgrade redhat/kernel-rt-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  7. Upgrade

    Upgrade redhat/kernel-rt-doc to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  8. Upgrade

    Upgrade redhat/kernel-rt-trace to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  9. Upgrade

    Upgrade redhat/kernel-rt-trace-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  10. Upgrade

    Upgrade redhat/kernel-rt-trace-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-1160.169.1.rt56.1321.el7
  11. Operational

    Reboot the system for the kernel security update to take effect.

Event History

Nov 5, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·08:55 PM
Data Sourced
via Red Hat·08:55 PM
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