CVEvulnerability
CVE-2026-68203
- Status
- Received
- Published
- 2026-08-10
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
media: vivid: fix cleanup bugs in vivid_init()
When platform_device_register() fails in vivid_init(), the embedded
struct device in vivid_pdev has already been initialized by
device_initialize(), but the failure path jumps to free_output_strings
without dropping the device reference for the current platform device:
vivid_init()
-> platform_device_register(&vivid_pdev)
-> device_initialize(&vivid_pdev.dev)
-> setup_pdev_dma_masks(&vivid_pdev)
-> platform_device_add(&vivid_pdev)
This leads to a reference leak when platform_device_register() fails.
Fix this by calling platform_device_put() before jumping to the common
cleanup path.
Also, the unreg_driver label incorrectly calls
platform_driver_register() instead of platform_driver_unregister(),
which breaks cleanup when workqueue creation fails after successful
driver registration. Fix that as well.
The reference leak was identified by a static analysis tool I developed
and confirmed by manual review. The incorrect cleanup call was found
during code inspection.
References
- https://git.kernel.org/stable/c/1349af7f87df57940619f5b87990b799dac9ed8a git.kernel.org
- https://git.kernel.org/stable/c/4385092a86b94e1f332db35a3766108978c0722f git.kernel.org
- https://git.kernel.org/stable/c/6d51ad8f1c50c50d1abcc97fd243179967184c6a git.kernel.org
- https://git.kernel.org/stable/c/a07c179a92e949172ca52f6d4a13202ea88cd4b7 git.kernel.org
- https://git.kernel.org/stable/c/ae6ccae32f51f788035d2c5cec898491dd7150ef git.kernel.org