Description
In the Linux kernel, the following vulnerability has been resolved:
drm/vc4: hvs/v3d: Fix null dereference in unbind
The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions. Since the vc4-drm gets removed before its dependent drivers (vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to get drvdata of its master and fails with a null dereference error.
Use the data pointer passed to the unbind functions directly instead of dev_get_drvdata(master). This avoids using potentially freed memory.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e; >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1; >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 8f62aae059e06746a18a00af27179c3c0f17f4c7; >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 708688ec31ac6b35103ba364dc300a09930079d4; >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 261f0a3f0ac03248284f5116d3258f89c9642215; >= c8b75bca92cbf064b9fa125fc74a85994452e935, < 7dc3680b7ffe01add3e9299fde8471d2dd53a8ae |
| Linux | Linux | 4.4 |
References
- https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215
- https://git.kernel.org/stable/c/3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1
- https://git.kernel.org/stable/c/3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e
- https://git.kernel.org/stable/c/708688ec31ac6b35103ba364dc300a09930079d4
- https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae
- https://git.kernel.org/stable/c/8f62aae059e06746a18a00af27179c3c0f17f4c7
Timeline
- Published
- Aug 10, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received