CVE-2025-40191

{
  "id": "CVE-2025-40191",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-11-12T22:15:46.080",
  "lastModified": "2026-10-19T21:10:00.160",
  "vulnStatus": "Deferred",
  "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't 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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/amdkfd: Corrección de la fuga de referencias del proceso kfd al desmapear userptr\n\nkfd_lookup_process_by_pid retiene la referencia del proceso kfd para asegurar que no sea destruido mientras se envía el evento de segfault al espacio de usuario.\n\nLa llamada a kfd_lookup_process_by_pid como parámetro de función provoca una fuga del contador de referencias del proceso kfd y omite la verificación de puntero NULL si el proceso de la aplicación ya ha sido destruido."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "2d274bf7099bc5e95fabaa93f23d0eb2977187ad",
              "lessThan": "60f6112fc9b3ba0eae519f10702c0c13bab45742",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "2d274bf7099bc5e95fabaa93f23d0eb2977187ad",
              "lessThan": "58e6fc2fb94f0f409447e5d46cf6a417b6397fbc",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.16",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.17.4",
              "lessThanOrEqual": "6.17.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/58e6fc2fb94f0f409447e5d46cf6a417b6397fbc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/60f6112fc9b3ba0eae519f10702c0c13bab45742",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}