FKIE_CVE-2025-40191

Vulnerability from fkie_nvd - Published: 2025-11-12 22:15 - Updated: 2026-06-17 09:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix kfd process ref leaking when userptr unmapping kfd_lookup_process_by_pid hold the kfd process reference to ensure it doesn't get destroyed while sending the segfault event to user space. Calling kfd_lookup_process_by_pid as function parameter leaks the kfd process refcount and miss the NULL pointer check if app process is already destroyed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58e6fc2fb94f0f409447e5d46cf6a417b6397fbc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60f6112fc9b3ba0eae519f10702c0c13bab45742
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "60f6112fc9b3ba0eae519f10702c0c13bab45742",
              "status": "affected",
              "version": "2d274bf7099bc5e95fabaa93f23d0eb2977187ad",
              "versionType": "git"
            },
            {
              "lessThan": "58e6fc2fb94f0f409447e5d46cf6a417b6397fbc",
              "status": "affected",
              "version": "2d274bf7099bc5e95fabaa93f23d0eb2977187ad",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix kfd process ref leaking when userptr unmapping\n\nkfd_lookup_process_by_pid hold the kfd process reference to ensure it\ndoesn\u0027t get destroyed while sending the segfault event to user space.\n\nCalling kfd_lookup_process_by_pid as function parameter leaks the kfd\nprocess refcount and miss the NULL pointer check if app process is\nalready destroyed."
    }
  ],
  "id": "CVE-2025-40191",
  "lastModified": "2026-06-17T09:21:26.040",
  "metrics": {},
  "published": "2025-11-12T22:15:46.080",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/58e6fc2fb94f0f409447e5d46cf6a417b6397fbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60f6112fc9b3ba0eae519f10702c0c13bab45742"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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