Riskcovery

CVE-2025-39705

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

State
Published
Severity
Not scored
Published
Sep 5, 2025
Updated
Oct 30, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to before dd9699368f37aca4f216857847a46a8a2c289f94Affected
  • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to before 0d9f4f202de1522aadc7a827aba0ae92b3d70937Affected
  • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to before 0961673cc5f0055957aa46f25eb4ef6c07e00165Affected
  • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to before 4ade995b9b25b3c6e8dc42c27070340f1358d8c8Affected
  • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to before 1bcf63a44381691d6192872801f830ce3250e367Affected
LinuxLinux
  • 4.15Affected
  • before 4.15Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.44 through 6.12.*Not affected
  • 6.16.4 through 6.16.*Not affected
  • 6.17 and laterNot affected

References

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