Expired Pointer Dereference Affecting kernel-rt-modules-extra package, versions <0:4.18.0-553.176.1.rt7.517.el8_10


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTMODULESEXTRA-21042743
  • published16 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2026-98320  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-modules-extra to version 0:4.18.0-553.176.1.rt7.517.el8_10 or higher.
This issue was patched in RHSA-2026:85774.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules-extra package and not the kernel-rt-modules-extra package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: flowtable: hold reference on ct until flow is released

nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also allow to refer to the wrong conntrack from the flowtable datapath. Hold reference on ct until flow is released after rcu grace period.

Add rcu_barrier() on module exit path, to ensure pending flow entries are release before module goes away.

CVSS Base Scores

version 3.1