What is RHSA-2026:49032?

RHSA-2026:49032 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel security update

Which CVE IDs does RHSA-2026:49032 cover?

RHSA-2026:49032 covers the following CVE IDs: CVE-2026-64530. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:49032?

RHSA-2026:49032 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

Which products are affected by RHSA-2026:49032?

RHSA-2026:49032 affects 169 products, including: Red Hat Enterprise Linux AppStream E4S (v.9.2); Red Hat Enterprise Linux BaseOS E4S (v.9.2); bpftool-0:7.0.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2); bpftool-0:7.0.0-284.184.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2); bpftool-0:7.0.0-284.184.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2); and others — see the full list on the advisory page.

RHSA-2026:49032HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Vendor

Red Hat Product Security

Published

July 31, 2026

Last Modified

July 31, 2026

🔗 CVE IDs covered (1)

CVE-2026-64530 →

📋 Description

CVE-2026-64530 — kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

🎯 Affected products169

Red Hat Enterprise Linux AppStream E4S (v.9.2)
Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-0:7.0.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-0:7.0.0-284.184.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-0:7.0.0-284.184.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-0:7.0.0-284.184.1.el9_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
bpftool-debuginfo-0:7.0.0-284.184.1.el9_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-0:5.14.0-284.184.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-0:5.14.0-284.184.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-0:5.14.0-284.184.1.el9_2.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-0:5.14.0-284.184.1.el9_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-core-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-core-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-debuginfo-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
kernel-64k-debug-debuginfo-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-devel-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
kernel-64k-debug-devel-matched-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
kernel-64k-debug-modules-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-modules-core-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
kernel-64k-debug-modules-extra-0:5.14.0-284.184.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2)
+139 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Workaround: To mitigate this issue, avoid configuring the Linux kernel's traffic control (tc) subsystem with the RED queue discipline (`red`) that includes `qevent early_drop` and an `action ct` filter on interfaces processing fragmented UDP streams. This specific configuration is required to trigger the use-after-free vulnerability.

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products169

✅ Remediation

🔗 References (4)