{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "652b1f26125fe48aed5f4944698a85b457eef491",
              "status": "affected",
              "version": "9eee152aab56d374edb9ad21b3db05f5cdda2fe6",
              "versionType": "git"
            },
            {
              "lessThan": "253555a9baccefffe1f6e5f2fe54363c7c01ebb9",
              "status": "affected",
              "version": "9eee152aab56d374edb9ad21b3db05f5cdda2fe6",
              "versionType": "git"
            },
            {
              "lessThan": "de9f6bcdb44f0e410031002e2f103826ea6b6259",
              "status": "affected",
              "version": "9eee152aab56d374edb9ad21b3db05f5cdda2fe6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "865e2dbadf6856c9219626fbd6154cac44e5fbca",
              "versionType": "git"
            },
            {
              "lessThan": "5.9",
              "status": "affected",
              "version": "5.8.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.59",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.13",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.8.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: don\u0027t drop the runtime PM reference twice in amdgpu_gpr\n\namdgpu_debugfs_gpr_read() drops its runtime PM reference right after\nreading the wave registers. When copying them to userspace fails, it\njumps to the err label, which drops the reference a second time. A read\ninto a bad buffer on Navi31 either steals a reference somebody else\nholds (power/runtime_usage goes from 1 to 0) or underflows the count:\n\n  amdgpu 0000:03:00.0: Runtime PM usage count underflow!\n\nThe registers are already in the kernel buffer at that point, so finish\nthe hardware access first and copy the buffer with a single\ncopy_to_user() instead of the put_user() loop with its own error path.\n\n(cherry picked from commit 31035bbd74f7c3e10c163db875b8e67f8b50ee6a)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T10:35:05.753Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/652b1f26125fe48aed5f4944698a85b457eef491"
        },
        {
          "url": "https://git.kernel.org/stable/c/253555a9baccefffe1f6e5f2fe54363c7c01ebb9"
        },
        {
          "url": "https://git.kernel.org/stable/c/de9f6bcdb44f0e410031002e2f103826ea6b6259"
        }
      ],
      "title": "drm/amdgpu: don\u0027t drop the runtime PM reference twice in amdgpu_gpr",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99150",
    "datePublished": "2026-10-28T10:35:05.753Z",
    "dateReserved": "2026-09-25T10:25:14.396Z",
    "dateUpdated": "2026-10-28T10:35:05.753Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}