drm/virtio: fix object leak when drm_gem_handle_create() fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98609
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:13 UTC
Updated2026-10-19 10:19:22 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa 13423a058187c2039aa8cb235c916be4477221b7 git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa 687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa 264ae8ac8fd625b6c118baf16c111adeee2ec632 git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa e2edd2d78d2cf8446de017adec9598feefed3297 git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa 372e9c3d45f664a2c000427ccbf6cdc2f99b3170 git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa a93dce15dfef200c346b050a2acbed516cc62706 git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa f75066c79d1eec453c0d386ef8636873d1e11f2c git Not specified
CNA Linux Linux affected dc5698e80cf724770283e10414054662bdf6ccfa 36570ef2244cc4d7563b1f0157bc0f032498638c git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 5.10.271 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.222 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e2edd2d78d2cf8446de017adec9598feefed3297 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/13423a058187c2039aa8cb235c916be4477221b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/687be2f8b5e0e0ca9a7028f8f6413d0ed3fbb9dc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/372e9c3d45f664a2c000427ccbf6cdc2f99b3170 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a93dce15dfef200c346b050a2acbed516cc62706 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/36570ef2244cc4d7563b1f0157bc0f032498638c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f75066c79d1eec453c0d386ef8636873d1e11f2c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/264ae8ac8fd625b6c118baf16c111adeee2ec632 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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