Expired Pointer Dereference Affecting kernel-rt-64k-debug-modules-core package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELRT64KDEBUGMODULESCORE-19211066
  • published23 Aug 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

NewCVE-2026-74533  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

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

NVD Description

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

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

Bluetooth: ISO: fix race of kfree vs kref_get_unless_zero

hci_conn::iso_data is accessed and modified without lock or RCU. This leads to a race

[Task hdev->workqueue]                 	[Task 2]
iso_recv                                    iso_conn_put(conn)
  conn = LOAD hcon->iso_data                  iso_conn_free(conn)
  iso_conn_hold_unless_zero(conn)               hcon->iso_data = NULL
                                                kfree(conn)
    kref_get_unless_zero(&conn->ref) /* UAF */

and also to races in iso_conn_add() vs. iso_conn_free().

Fix by adding spinlock hci_conn::proto_lock and using it to guard hci_conn::iso_data.

CVSS Base Scores

version 3.1