CVE-2026-98319
Description
In the Linux kernel, the following vulnerability has been resolved: drm: Fix drm_pending_vblank_event leak in error path for out_fence_ptr When an out_fence_ptr is provided but DRM_MODE_PAGE_FLIP_EVENT is not set, a drm_pending_vblank_event will be allocated. If later, there is an allocation failure or another failure at setup_out_fence(), that event will not have base.fence set and it will not be released at complete_signaling(). Release the event and set crtc_state->event to NULL just like in the DRM_MODE_PAGE_FLIP_EVENT case when there is a failure at drm_event_reserve_init(). That is, prepare_signaling() releases the event and there is nothing to be done at complete_signaling(). Use drm_event_cancel_free() as that will also undo drm_event_reserve_init() in case it has been called.
How to fix
- Linux Linux3d6576ed3de01e8a378397b7020e33ae3d40aa6c, 86c33f740aa27e9cdc1259f0cc59c9c58f545e4b, 88c450e23b8fd4f1dcd329562f5e81ef05f3d941, 780716e2e019186fa6e5aad097a44b87b0b5388f, d0be0516b5224eb5b6f42f8564a8deadb20ae16b, daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09, b9a68a9ccaada15d8dd0102c188cc6b868ff800b, 9eb1a393c89a79c4210230d23e7d88d239c61d7b, 4.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 92c715fca907686f5298220ece53423e38ba3aed ≤ v < 3d6576ed3de01e8a378397b7020e33ae3d40aa6c, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < 86c33f740aa27e9cdc1259f0cc59c9c58f545e4b, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < 88c450e23b8fd4f1dcd329562f5e81ef05f3d941, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < 780716e2e019186fa6e5aad097a44b87b0b5388f, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < d0be0516b5224eb5b6f42f8564a8deadb20ae16b, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < b9a68a9ccaada15d8dd0102c188cc6b868ff800b, 92c715fca907686f5298220ece53423e38ba3aed ≤ v < 9eb1a393c89a79c4210230d23e7d88d239c61d7b, 4cd462c7f2b6fcc208aebf44f2c831681feaa925, 4.9.10 ≤ v < 4.10, 4.10 | 3d6576ed3de01e8a378397b7020e33ae3d40aa6c, 86c33f740aa27e9cdc1259f0cc59c9c58f545e4b, 88c450e23b8fd4f1dcd329562f5e81ef05f3d941, 780716e2e019186fa6e5aad097a44b87b0b5388f, d0be0516b5224eb5b6f42f8564a8deadb20ae16b, daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09, b9a68a9ccaada15d8dd0102c188cc6b868ff800b, 9eb1a393c89a79c4210230d23e7d88d239c61d7b, 4.10 |
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