GHSA-7Q7P-F6VV-QRWF
Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-30 15:34In 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)
{
"affected": [],
"aliases": [
"CVE-2026-98779"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:17:31Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix ACP MFD device leak on init failure\n\nacp_hw_init() registers ACP child devices with mfd_add_devices() before\nattaching them to the ACP power domain and initializing the hardware.\n\nIf attaching a child to the power domain fails, or if the ACP reset or\nclock enable operation times out, the failure path frees only the\nsource cell, resource, and platform-data allocations. The child\nplatform devices already registered by mfd_add_devices() remain\nregistered and are never released.\n\nRemove the children from the power domain and unregister the MFD\ndevices on failures that occur after mfd_add_devices() succeeds. Keep\nmfd_add_devices() failures on the existing cleanup path since the MFD\ncore already rolls back partially registered children itself.\n\nThe issue was identified by a static analysis tool I developed and\nconfirmed by manual review.\n\n(cherry picked from commit 63da68d6a2279ec945581c990c5a59a5ae8b5560)",
"id": "GHSA-7q7p-f6vv-qrwf",
"modified": "2026-10-30T15:34:01Z",
"published": "2026-10-18T18:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98779"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b9a53940a2bc063ea4cd09ee49220a503a0170c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/385ad314f1c096aae71fff516214bb312a6047fb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/587469076e4ffb617f7ad1a0c4a13072a3e87113"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/65ef6645982ccde16a7bc98d025eb80f5fab47f6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7b7f770f48be77ce38e93216983dcdf1ea3a42ba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/abf854513bc19e6e24d45353ac99ec5627ee0acc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d700c26ed64bd3c26e4aa7679b9d5f3333c3747a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f0013046151b7467e62c471c1c83d63ea255799c"
}
],
"schema_version": "1.4.0",
"severity": []
}
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