Double Free Affecting kernel-source-azure package, versions <6.4.0-150700.20.11.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-SLES157-KERNELSOURCEAZURE-12239274
  • published29 Aug 2025
  • disclosed28 Aug 2025

Introduced: 28 Aug 2025

CVE-2025-38313  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-source-azure to version 6.4.0-150700.20.11.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-source-azure package and not the kernel-source-azure package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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

bus: fsl-mc: fix double-free on mc_dev

The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable.

In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed.

This commit introduces back the following checkpatch warning which is a false-positive.

WARNING: kfree(NULL) is safe and this check is probably not required

  •   if (mc_bus)
    
  •           kfree(mc_bus);
    

CVSS Base Scores

version 3.1