RHSA-2026:40760: Important: kernel security update

Published Jul 16, 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: ima: don't clear IMADIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) kernel: Bluetooth: SCO: Fix use-after-free in scorecvframe() due to missing sockhold (CVE-2026-31408) kernel: smb: client: fix OOB reads parsing symlink error response (CVE-2026-31613) kernel: netfilter: nfconntrackhelper: pass helper to expect cleanup (CVE-2026-43027) kernel: rtmutex: Use waiter::task instead of current in removewaiter() (CVE-2026-43499) kernel: RDMA/vmwpvrdma: Fix double free on pvrdmaallocucontext() error path (CVE-2026-46189) kernel: drm/gem: Fix inconsistent plane dimension calculation in drmgemfbinitwithfuncs() (CVE-2026-46209) kernel: futex/requeue: Prevent NULL pointer dereference in removewaiter() on self-deadlock (CVE-2026-53166) 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

54 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - TUS
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life
redhat/kernel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/bpftool<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/bpftool-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-abi-stablelists<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-core<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-cross-headers<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-core<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-devel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-modules<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-modules-extra<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-devel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-doc<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-headers<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-modules<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-modules-extra<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools-libs<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/perf<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/perf-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/python3-perf<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/python3-perf-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/bpftool<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/bpftool-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-core<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-cross-headers<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-core<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-devel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-modules<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debug-modules-extra<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-debuginfo-common-ppc64le<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-devel<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-headers<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-modules<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-modules-extra<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/kernel-tools-libs<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/perf<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/perf-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/python3-perf<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8
redhat/python3-perf-debuginfo<4.18.0-477.152.1.el8_8
4.18.0-477.152.1.el8_8

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  2. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  3. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  4. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  5. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  6. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  7. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  8. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  9. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  10. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  11. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  12. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  13. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  14. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  15. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  16. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  17. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  18. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  19. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  20. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  21. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  22. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  23. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  24. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  25. Upgrade

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

    Fixed in 4.18.0-477.152.1.el8_8
  26. Upgrade

    Upgrade redhat/kernel-debuginfo-common-ppc64le to a version that resolves this vulnerability.

    Fixed in 4.18.0-477.152.1.el8_8

Event History

Jul 16, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·06:50 AM
Data Sourced
via Red Hat·06:50 AM
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-2026:40760?

The severity of RHSA-2026:40760 is classified as high with a score of 7.

2

What security vulnerabilities are addressed in RHSA-2026:40760?

RHSA-2026:40760 addresses vulnerabilities including a use-after-free in 'sco_recv_frame' and an issue with the IMA_DIGSIG flag in relation to non-IMA xattr.

3

How do I fix RHSA-2026:40760?

To fix RHSA-2026:40760, update the kernel packages on your Red Hat system to the latest versions provided in the security update.

4

What systems are affected by RHSA-2026:40760?

RHSA-2026:40760 affects systems running the Red Hat kernel, including various supported kernel packages and tools.

5

Is RHSA-2026:40760 a critical update?

Yes, RHSA-2026:40760 is classified as an important security update and should be applied promptly to mitigate risks.

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