media: vivid: fix cleanup bugs in vivid_init()

Summary

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.

Timeline

1. Aug 10, 2026, 12:00 PM UTCCVE published
2. Oct 21, 2026, 12:43 PM UTCRecord last updated

Affected versions

• Linux Linux

  From f46d740fb0258982f00ffdbddc6486e674edafb5 · fixed in ae6ccae32f51f788035d2c5cec898491dd7150ef; From f46d740fb0258982f00ffdbddc6486e674edafb5 · fixed in 4385092a86b94e1f332db35a3766108978c0722f; From f46d740fb0258982f00ffdbddc6486e674edafb5 · fixed in 1349af7f87df57940619f5b87990b799dac9ed8a; From f46d740fb0258982f00ffdbddc6486e674edafb5 · fixed in 6d51ad8f1c50c50d1abcc97fd243179967184c6a; From f46d740fb0258982f00ffdbddc6486e674edafb5 · fixed in a07c179a92e949172ca52f6d4a13202ea88cd4b7

• Linux Linux

  4.1

• KernelLinux

  From 4.1.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.101; From 6.13.0 · fixed in 6.18.42; From 6.19.0 · fixed in 7.1.6

References 5