CVE-2026-68303
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c8b75bca92cbf064b9fa125fc74a85994452e935 < 261f0a3f0ac03248284f5116d3258f89c9642215 | affected |
| Linux | Linux | c8b75bca92cbf064b9fa125fc74a85994452e935 < 7dc3680b7ffe01add3e9299fde8471d2dd53a8ae | affected |
| Linux | Linux | 4.4 | affected |
| Linux | Linux | 0 < 4.4 | unaffected |
| Linux | Linux | 7.1.6 <= 7.1.* | unaffected |
| Linux | Linux | 7.2-rc5 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215
- https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae
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