Description
In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix access violation during port device removal Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value. It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems. The same bug exists in the disable_show() routine, and it can be fixed the same way.
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
f061f43d7418cb62b8d073e221ec75d3f5b89e17 to < 5f1d68ef5ddac27c6b997adccd1c339cef1e6848affectedf061f43d7418cb62b8d073e221ec75d3f5b89e17 to < 63533549ff53d24daf47c443dbd43c308afc3434affectedf061f43d7418cb62b8d073e221ec75d3f5b89e17 to < 6119ef6517ce501fc548154691abdaf1f954a277affectedf061f43d7418cb62b8d073e221ec75d3f5b89e17 to < a4b46d450c49f32e9d4247b421e58083fde304ceaffected
Linux Linux
Default version status: affected
6.0affected0 to < 6.0unaffected6.1.91 to ≤ 6.1.*unaffected6.6.31 to ≤ 6.6.*unaffected6.8.10 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected