VYPR
← All advisories
Unrated severityNVD Advisory· Published Sep 5, 2025· Updated Sep 29, 2025

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

CVE-2025-39705

Description

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)

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

124

Patches

Vulnerability mechanics

References

3

News mentions

0

No linked articles in our index yet.