CVE-2026-98609 (GCVE-0-2026-98609)
Vulnerability from cvelistv5
Published
2026-10-18 15:19
Modified
2026-10-19 09:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: fix object leak when drm_gem_handle_create() fails virtio_gpu_gem_create() owns the reference taken by virtio_gpu_object_create(). On the drm_gem_handle_create() error path it calls drm_gem_object_release() instead of dropping that reference. drm_gem_object_release() is the inverse of drm_gem_object_init() and does not touch the reference count or call obj->funcs->free(), so it is only correct as the last step of a destructor, as in virtio_gpu_cleanup_object(). Using it here leaves the bo at refcount 1 with no remaining reference, so virtio_gpu_free_object() never runs and the shmem pages, sg table and virtio_gpu_object are leaked. Since virtio_gpu_object_create() has already set bo->created, VIRTIO_GPU_CMD_RESOURCE_UNREF is not queued either, leaking the host-side resource and the resource id. drm_gem_handle_create_tail() drops the handle reference on all of its internal error paths, so the caller only has to drop its own. Use drm_gem_object_put(), matching the success path below.
References
Impacted products
Vendor Product Version
Linux Linux Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
Version: dc5698e80cf724770283e10414054662bdf6ccfa
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/virtio/virtgpu_gem.c"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix object leak when drm_gem_handle_create() fails\n\nvirtio_gpu_gem_create() owns the reference taken by\nvirtio_gpu_object_create(). On the drm_gem_handle_create() error path it\ncalls drm_gem_object_release() instead of dropping that reference.\n\ndrm_gem_object_release() is the inverse of drm_gem_object_init() and does\nnot touch the reference count or call obj-\u003efuncs-\u003efree(), so it is only\ncorrect as the last step of a destructor, as in\nvirtio_gpu_cleanup_object(). Using it here leaves the bo at refcount 1\nwith no remaining reference, so virtio_gpu_free_object() never runs and\nthe shmem pages, sg table and virtio_gpu_object are leaked. Since\nvirtio_gpu_object_create() has already set bo-\u003ecreated,\nVIRTIO_GPU_CMD_RESOURCE_UNREF is not queued either, leaking the host-side\nresource and the resource id.\n\ndrm_gem_handle_create_tail() drops the handle reference on all of its\ninternal error paths, so the caller only has to drop its own. Use\ndrm_gem_object_put(), matching the success path below."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:22:36.271Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/13423a058187c2039aa8cb235c916be4477221b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc"
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        {
          "url": "https://git.kernel.org/stable/c/264ae8ac8fd625b6c118baf16c111adeee2ec632"
        },
        {
          "url": "https://git.kernel.org/stable/c/e2edd2d78d2cf8446de017adec9598feefed3297"
        },
        {
          "url": "https://git.kernel.org/stable/c/372e9c3d45f664a2c000427ccbf6cdc2f99b3170"
        },
        {
          "url": "https://git.kernel.org/stable/c/a93dce15dfef200c346b050a2acbed516cc62706"
        },
        {
          "url": "https://git.kernel.org/stable/c/f75066c79d1eec453c0d386ef8636873d1e11f2c"
        },
        {
          "url": "https://git.kernel.org/stable/c/36570ef2244cc4d7563b1f0157bc0f032498638c"
        }
      ],
      "title": "drm/virtio: fix object leak when drm_gem_handle_create() fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98609",
    "datePublished": "2026-10-18T15:19:24.250Z",
    "dateReserved": "2026-09-25T10:25:14.360Z",
    "dateUpdated": "2026-10-19T09:22:36.271Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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