Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt wait_for_completion_interruptible_timeout() returns -ERESTARTSYS when interrupted. This needs to abort the URB and return an error. No data has been received from the device so any reads from the transfer buffer are invalid. The original code tests !ret, which only catches the timeout case (0). On signal delivery (-ERESTARTSYS), !ret is false so the function skips usb_kill_urb() and falls through to read from the unfilled transfer buffer. Fix by capturing the return value into a long (matching the function return type) and handling signal (negative) and timeout (zero) cases with separate checks that both call usb_kill_urb() before returning.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4381a36abdf1c5c0323c1c51f869dc000115eb20 to < 8b51277eec433d4e724b273a5a5c64e8acfbe405affected4381a36abdf1c5c0323c1c51f869dc000115eb20 to < b6cb07f02253bdefd2339e57eaa1428a7b28cd0faffected4381a36abdf1c5c0323c1c51f869dc000115eb20 to < d64458784036f5818e22781254b6be299d52a19caffected4381a36abdf1c5c0323c1c51f869dc000115eb20 to < b66437cb20a2d9ef201f40b675569f8ea7787c9faffected
Linux Linux
Default version status: affected
6.7affected0 to < 6.7unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected