drm/amd/display: Add null check for head_pipe in dcn32_acquire_idle_pipe_for_head_pipe_in_layer

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-49918
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-10-21 18:15:14 UTC
Updated2026-10-21 13:17:48 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for head_pipe in dcn32_acquire_idle_pipe_for_head_pipe_in_layer This commit addresses a potential null pointer dereference issue in the `dcn32_acquire_idle_pipe_for_head_pipe_in_layer` function. The issue could occur when `head_pipe` is null. The fix adds a check to ensure `head_pipe` is not null before asserting it. If `head_pipe` is null, the function returns NULL to prevent a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn32/dcn32_resource.c:2690 dcn32_acquire_idle_pipe_for_head_pipe_in_layer() error: we previously assumed 'head_pipe' could be null (see line 2681)

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 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 180280f3c4621d699d903773bb84bf7f0bc6a891 git Not specified
CNA Linux Linux affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 4f47292f488fa7041284dca1f1244116c18721f1 git Not specified
CNA Linux Linux affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c 96d4c2ee18d732a248d053aae8c4a27cb1d68d1c git Not specified
CNA Linux Linux affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c ac2140449184a26eac99585b7f69814bd3ba8f2d git Not specified
CNA Linux Linux affected 4.15 Not specified
CNA Linux Linux unaffected 4.15 semver Not specified
CNA Linux Linux unaffected 6.6.160 6.6.* semver Not specified
CNA Linux Linux unaffected 6.10.14 6.10.* semver Not specified
CNA Linux Linux unaffected 6.11.3 6.11.* semver Not specified
CNA Linux Linux unaffected 6.12 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ac2140449184a26eac99585b7f69814bd3ba8f2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/180280f3c4621d699d903773bb84bf7f0bc6a891 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/96d4c2ee18d732a248d053aae8c4a27cb1d68d1c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4f47292f488fa7041284dca1f1244116c18721f1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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