CVE-2025-38257 Affecting kernel-ipaclones-internal package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

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  • Snyk IDSNYK-CENTOS9-KERNELIPACLONESINTERNAL-10678736
  • published10 Jul 2025
  • disclosed9 Jul 2025

Introduced: 9 Jul 2025

NewCVE-2025-38257  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 kernel-ipaclones-internal.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-ipaclones-internal package and not the kernel-ipaclones-internal package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

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

s390/pkey: Prevent overflow in size calculation for memdup_user()

Number of apqn target list entries contained in 'nr_apqns' variable is determined by userspace via an ioctl call so the result of the product in calculation of size passed to memdup_user() may overflow.

In this case the actual size of the allocated area and the value describing it won't be in sync leading to various types of unpredictable behaviour later.

Use a proper memdup_array_user() helper which returns an error if an overflow is detected. Note that it is different from when nr_apqns is initially zero - that case is considered valid and should be handled in subsequent pkey_handler implementations.

Found by Linux Verification Center (linuxtesting.org).

CVSS Base Scores

version 3.1