NULL Pointer Dereference Affecting linux-virt package, versions <6.12.45-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LINUXVIRT-14124335
  • published27 Nov 2025
  • disclosed5 Sept 2025

Introduced: 5 Sep 2025

CVE-2025-39705  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Minimos:latest linux-virt to version 6.12.45-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-virt package and not the linux-virt package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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

drm/amd/display: fix a Null pointer dereference vulnerability

[Why] A null pointer dereference vulnerability exists in the AMD display driver's (DC module) cleanup function dc_destruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dc_destruct() is called, there's no NULL check before dereferencing the perf_trace member (dc->ctx->perf_trace), causing a kernel null pointer dereference crash.

[How] Check if dc->ctx is non-NULL before dereferencing.

(Updated commit text and removed unnecessary error message) (cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)

CVSS Base Scores

version 3.1