CVE-2026-98779 (GCVE-0-2026-98779)
Vulnerability from cvelistv5
Published
2026-10-18 15:48
Modified
2026-10-30 12:39
Severity ?
Summary
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)
References
Impacted products
Vendor Product Version
Linux Linux Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
Version: 25030321ba2860c56651429a4f28d94a6483d952
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c"
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "0",
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              "version": "5.10.273",
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            },
            {
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "versionEndExcluding": "5.10.273",
                  "versionStartIncluding": "4.6",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:39:46.267Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/385ad314f1c096aae71fff516214bb312a6047fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b7f770f48be77ce38e93216983dcdf1ea3a42ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/65ef6645982ccde16a7bc98d025eb80f5fab47f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d700c26ed64bd3c26e4aa7679b9d5f3333c3747a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b9a53940a2bc063ea4cd09ee49220a503a0170c"
        },
        {
          "url": "https://git.kernel.org/stable/c/587469076e4ffb617f7ad1a0c4a13072a3e87113"
        },
        {
          "url": "https://git.kernel.org/stable/c/abf854513bc19e6e24d45353ac99ec5627ee0acc"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0013046151b7467e62c471c1c83d63ea255799c"
        }
      ],
      "title": "drm/amdgpu: fix ACP MFD device leak on init failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98779",
    "datePublished": "2026-10-18T15:48:16.729Z",
    "dateReserved": "2026-09-25T10:25:14.369Z",
    "dateUpdated": "2026-10-30T12:39:46.267Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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