CVE-2026-98609 (GCVE-0-2026-98609)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:19 – Updated: 2026-10-19 09:22
VLAI
Title
drm/virtio: fix object leak when drm_gem_handle_create() fails
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < 13423a058187c2039aa8cb235c916be4477221b7 (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < 687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < 264ae8ac8fd625b6c118baf16c111adeee2ec632 (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < e2edd2d78d2cf8446de017adec9598feefed3297 (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < 372e9c3d45f664a2c000427ccbf6cdc2f99b3170 (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < a93dce15dfef200c346b050a2acbed516cc62706 (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < f75066c79d1eec453c0d386ef8636873d1e11f2c (git)
Affected: dc5698e80cf724770283e10414054662bdf6ccfa , < 36570ef2244cc4d7563b1f0157bc0f032498638c (git)
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Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "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": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "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"
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            "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."
          }
        ],
        "id": "CVE-2026-98609",
        "lastModified": "2026-10-19T10:19:22.927",
        "metrics": {},
        "published": "2026-10-18T16:17:13.677",
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        "vulnStatus": "Received"
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      "current_release_date": "2026-10-20T17:54:54+00:00",
      "cve": "CVE-2026-98609",
      "id": "CVE-2026-98609",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "235",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/virtio: fix object leak when drm_gem_handle_create() fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98609.json",
      "version": "3"
    }
  }
}



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