NULL Pointer Dereference Affecting kernel-default-livepatch package, versions <5.14.21-150400.24.179.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-SLES154-KERNELDEFAULTLIVEPATCH-13625643
  • published18 Oct 2025
  • disclosed17 Oct 2025

Introduced: 17 Oct 2025

CVE-2023-53356  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-default-livepatch to version 5.14.21-150400.24.179.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-livepatch package and not the kernel-default-livepatch package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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

usb: gadget: u_serial: Add null pointer check in gserial_suspend

Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference.

Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.

CVSS Base Scores

version 3.1