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)

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Amd
  • Graphics Driver
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/0961673cc5f0055957aa46f25eb4ef6c07e00165 cve-icon cve-icon
https://git.kernel.org/stable/c/1bcf63a44381691d6192872801f830ce3250e367 cve-icon cve-icon
https://git.kernel.org/stable/c/4ade995b9b25b3c6e8dc42c27070340f1358d8c8 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025090549-CVE-2025-39705-6ac5@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-39705 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-39705 cve-icon
History

Mon, 08 Sep 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Amd
Amd graphics Driver
Linux
Linux linux Kernel
Vendors & Products Amd
Amd graphics Driver
Linux
Linux linux Kernel

Sat, 06 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Fri, 05 Sep 2025 17:30:00 +0000

Type Values Removed Values Added
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)
Title drm/amd/display: fix a Null pointer dereference vulnerability
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-05T17:21:11.767Z

Updated: 2025-09-08T15:21:55.847Z

Reserved: 2025-04-16T07:20:57.115Z

Link: CVE-2025-39705

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-05T18:15:47.690

Modified: 2025-09-08T16:25:38.810

Link: CVE-2025-39705

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-09-05T00:00:00Z

Links: CVE-2025-39705 - Bugzilla