296,172
Total vulnerabilities in the database
In the Linux kernel, the following vulnerability has been resolved:
media: streamzap: fix race between device disconnection and urb callback
Syzkaller has reported a general protection fault at function ir_raw_event_store_with_filter(). This crash is caused by a NULL pointer dereference of dev->raw pointer, even though it is checked for NULL in the same function, which means there is a race condition. It occurs due to the incorrect order of actions in the streamzap_disconnect() function: rc_unregister_device() is called before usb_kill_urb(). The dev->raw pointer is freed and set to NULL in rc_unregister_device(), and only after that usb_kill_urb() waits for in-progress requests to finish.
If rc_unregister_device() is called while streamzap_callback() handler is not finished, this can lead to accessing freed resources. Thus rc_unregister_device() should be called after usb_kill_urb().
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 6.13 | 6.13.11 |
| linux / linux_kernel | 6.14 | 6.14.2 |
| linux / linux_kernel | 6.2 | 6.6.87 |
| linux / linux_kernel | 6.7 | 6.12.23 |
| linux / linux_kernel | 2.6.36 | 6.1.134 |