Improper Update of Reference Count Affecting kernel-rt-64k-modules-core package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.2% (9th percentile)

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  • Snyk IDSNYK-RHEL10-KERNELRT64KMODULESCORE-20299108
  • published30 Sept 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-97946  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 kernel-rt-64k-modules-core.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-modules-core package and not the kernel-rt-64k-modules-core package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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

x86/amd_node: Fix PCI device reference counting in amd_smn_init()

The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete.

Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope.

Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting.

Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL.

CVSS Base Scores

version 3.1