drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-39675
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-09-05 18:15:43 UTC
Updated2026-05-12 13:17:03 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session() The function mod_hdcp_hdcp1_create_session() calls the function get_first_active_display(), but does not check its return value. The return value is a null pointer if the display list is empty. This will lead to a null pointer dereference. Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null. This is similar to the commit c3e9826a2202 ("drm/amd/display: Add null pointer check for get_first_active_display()"). (cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 2af45aadb7b5d3852c76e2d1e985289ada6f48bf git Not specified
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 ee0373b20bb67b1f00a1b25ccd24c8ac996b6446 git Not specified
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 857b8387a9777e42b36e0400be99b54c251eaf9a git Not specified
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd git Not specified
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 2ee86b764c54e0d6a5464fb023b630fdf20869cd git Not specified
CNA Linux Linux affected 2deade5ede56581722c0d7672f28b09548dc0fc4 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119 git Not specified
CNA Linux Linux affected 5.8 Not specified
CNA Linux Linux unaffected 5.8 semver Not specified
CNA Linux Linux unaffected 5.15.190 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.149 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.103 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.44 6.12.* semver Not specified
CNA Linux Linux unaffected 6.16.4 6.16.* semver Not specified
CNA Linux Linux unaffected 6.17 * original_commit_for_fix Not specified
ADP Siemens SIMATIC CN 4100 affected V5.0 custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2ee86b764c54e0d6a5464fb023b630fdf20869cd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2af45aadb7b5d3852c76e2d1e985289ada6f48bf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/857b8387a9777e42b36e0400be99b54c251eaf9a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-032379.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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