Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation, we do not call cmdq_pkt_create(). During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan" is NULL first before calling cmdq_pkt_destroy(). Calling cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and it will result in a NULL pointer dereference.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7627122fd1c06800a1fe624e9fb3c269796115e8 before fb05e973698f4af008c7fb6e0cfa6a2fa1d98409; affected 7627122fd1c06800a1fe624e9fb3c269796115e8 before c60583a87cb4a85b69d1f448f0be5eb6ec62cbb2; affected 7627122fd1c06800a1fe624e9fb3c269796115e8 before 4018651ba5c409034149f297d3dd3328b91561fd; affected 2c4396693698e876e559768d3d3a150c672ec384; affected 5.15.54 before 5.16 |
| Linux / Linux | affected 5.17; unaffected 0 before 5.17; unaffected 6.6.158 through 6.6.*; unaffected 6.11.7 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/fb05e973698f4af008c7fb6e0cfa6a2fa1d98409
- https://git.kernel.org/stable/c/c60583a87cb4a85b69d1f448f0be5eb6ec62cbb2
- https://git.kernel.org/stable/c/4018651ba5c409034149f297d3dd3328b91561fd
ADP enrichment
No English description supplied.
No references supplied.