CVE-2026-98779
Received
Received - Intake
Memory Leak in AMDGPU ACP MFD Device Handling
Vulnerability report for CVE-2026-98779, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-18
Last updated on: 2026-10-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix ACP MFD device leak on init failure
acp_hw_init() registers ACP child devices with mfd_add_devices() before
attaching them to the ACP power domain and initializing the hardware.
If attaching a child to the power domain fails, or if the ACP reset or
clock enable operation times out, the failure path frees only the
source cell, resource, and platform-data allocations. The child
platform devices already registered by mfd_add_devices() remain
registered and are never released.
Remove the children from the power domain and unregister the MFD
devices on failures that occur after mfd_add_devices() succeeds. Keep
mfd_add_devices() failures on the existing cleanup path since the MFD
core already rolls back partially registered children itself.
The issue was identified by a static analysis tool I developed and
confirmed by manual review.
(cherry picked from commit 63da68d6a2279ec945581c990c5a59a5ae8b5560)
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 25030321ba2860c56651429a4f28d94a6483d952 |
| Linux | Linux | 25030321ba2860c56651429a4f28d94a6483d952 |
| Linux | Linux | 25030321ba2860c56651429a4f28d94a6483d952 |
| Linux | Linux | 25030321ba2860c56651429a4f28d94a6483d952 |
| Linux | Linux | 4.6 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
