CVE-2025-40168 Affecting kernel-debug package, versions <0:4.18.0-553.105.1.el8_10


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELDEBUG-15360890
  • published27 Feb 2026
  • disclosed12 Nov 2025

Introduced: 12 Nov 2025

CVE-2025-40168  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-debug to version 0:4.18.0-553.105.1.el8_10 or higher.
This issue was patched in RLSA-2026:2720.

NVD Description

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

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

smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

smc_clc_prfx_match() is called from smc_listen_work() and not under RCU nor RTNL.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

Note that the returned value of smc_clc_prfx_match() is not used in the caller.

CVSS Base Scores

version 3.1