media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try()
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try() v4l2_subdev_call_state_try() macro allocates a subdev state with __v4l2_subdev_state_alloc(), but does not check the returned value. If __v4l2_subdev_state_alloc fails, it returns an ERR_PTR, and that would cause v4l2_subdev_call_state_try() to crash. Add proper error handling to v4l2_subdev_call_state_try().
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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References
- https://git.kernel.org/stable/c/5b0057459cdc243ffb35617603142dcace09c711
- https://git.kernel.org/stable/c/ed30811fbed40751deb952bde534aa2632dc0bf7
- https://git.kernel.org/stable/c/94e6336dc1f06a06f5b4cd04d4a012bba34f2857
- https://git.kernel.org/stable/c/a553530b3314a0bdc98cf114cdbe204551a70a00
- https://git.kernel.org/stable/c/f37df9a0eb5e43fcfe02cbaef076123dc0d79c7e
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