In the Linux kernel, the following vulnerability has been resolved:
uacce: fix cdev handling in the cleanup path
When cdev_device_add fails, it internally releases the cdev memory,
and if cdev_device_del is then executed, it will cause a hang error.
To fix it, we check the return value of cdev_device_add() and clear
uacce->cdev to avoid calling cdev_device_del in the uacce_remove.
References 4
https://git.kernel.org/stable/c/98d67a1bd6caddd0a8b8c82a0b925742cf500936
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a3bece3678f6c88db1f44c602b2a63e84b4040ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bd2393ed7712513e7e2dbcb6e21464a67ff9e702
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d9031575a2f8aabc53af3025dd79af313a2e046b
416baaa9-dc9f-4396-8d5f-8c081fb06d67