RHSA-2026:35896: Important: kernel security update

Published Jul 6, 2026
·
Updated

Important: kernel security update

Other sources

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: libceph: make decodepool() more resilient against corrupted osdmaps (CVE-2025-71116) kernel: libceph: prevent potential out-of-bounds reads in handleauthdone() (CVE-2026-22984) kernel: libceph: replace overzealous BUGON in osdmapapplyincremental() (CVE-2026-22990) kernel: netfilter: nfconntrackh323: check for zero length in DecodeQ931() (CVE-2026-23455) kernel: Bluetooth: SCO: Fix use-after-free in scorecvframe() due to missing sockhold (CVE-2026-31408) kernel: mptcp: fix slab-use-after-free in inetlookupestablished (CVE-2026-31669) kernel: tcp: fix potential race in tcpv6synrecvsock() (CVE-2026-43198) kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) kernel: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090) kernel: RDMA/rxe: Fix double free in rxesrqfrominit (CVE-2026-45852) kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent() (CVE-2026-46181) 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

28 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension
Red Hat Red Hat Enterprise Linux Server - AUS
redhat/kernel<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/bpftool<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/bpftool-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-abi-stablelists<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-core<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-cross-headers<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug-core<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug-devel<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug-modules<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debug-modules-extra<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-devel<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-doc<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-headers<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-modules<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-modules-extra<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-tools<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-tools-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/kernel-tools-libs<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/perf<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/perf-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/python3-perf<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4
redhat/python3-perf-debuginfo<4.18.0-305.197.1.el8_4
4.18.0-305.197.1.el8_4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  2. Upgrade

    Upgrade redhat/bpftool to a version that resolves this vulnerability.

    Fixed in 4.18.0-305.197.1.el8_4
  3. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  4. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  5. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  6. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  7. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  8. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  9. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  10. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  11. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  12. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  13. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  14. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  15. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  16. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  17. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  18. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  19. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  20. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  21. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  22. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-305.197.1.el8_4
  23. Upgrade

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

    Fixed in 4.18.0-305.197.1.el8_4
  24. Upgrade

    Upgrade redhat/python3-perf to a version that resolves this vulnerability.

    Fixed in 4.18.0-305.197.1.el8_4
  25. Upgrade

    Upgrade redhat/python3-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 4.18.0-305.197.1.el8_4
  26. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-46090
  27. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-31408
  28. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-46181
  29. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-45852
  30. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-22984
  31. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-22990
  32. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-31669
  33. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-43329
  34. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-23455
  35. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-43198
  36. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2025-71116
  37. Operational

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

Event History

Jul 6, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·01:57 PM
Data Sourced
via Red Hat·01:57 PM
Severity
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of RHSA-2026:35896?

The severity of RHSA-2026:35896 is classified as high with a score of 7.

2

How do I fix RHSA-2026:35896?

To fix RHSA-2026:35896, update the affected kernel packages on your Red Hat Enterprise Linux system.

3

What vulnerabilities are addressed in RHSA-2026:35896?

RHSA-2026:35896 addresses vulnerabilities including CVE-2025-71116 related to libceph and potential out-of-bounds reads.

4

What software is affected by RHSA-2026:35896?

The affected software packages include the Red Hat kernel and bpftool among others listed in the advisory.

5

When was RHSA-2026:35896 published?

RHSA-2026:35896 was published on July 6, 2026.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203