Description · from the CVE record
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
ProductAffectedFixed inSource
Linuxf061f43d7418cb62b8d073e221ec75d3f5b89e17 – < 5f1d68ef5ddac27c6b997adccd1c339cef1e68485f1d68ef5ddac27c6b997adccd1c339cef1e6848CNA
Linuxf061f43d7418cb62b8d073e221ec75d3f5b89e17 – < 63533549ff53d24daf47c443dbd43c308afc343463533549ff53d24daf47c443dbd43c308afc3434CNA
Linuxf061f43d7418cb62b8d073e221ec75d3f5b89e17 – < 6119ef6517ce501fc548154691abdaf1f954a2776119ef6517ce501fc548154691abdaf1f954a277CNA
Linuxf061f43d7418cb62b8d073e221ec75d3f5b89e17 – < a4b46d450c49f32e9d4247b421e58083fde304cea4b46d450c49f32e9d4247b421e58083fde304ceCNA
Linux6.06.1.91CNA
linux_kernelf061f43d7418 – < 5f1d68ef5dda5f1d68ef5ddaCISA-ADP
linux_kernelf061f43d7418 – < 63533549ff5363533549ff53CISA-ADP
linux_kernelf061f43d7418 – < 6119ef6517ce6119ef6517ceCISA-ADP
linux_kernelf061f43d7418 – < a4b46d450c49a4b46d450c49CISA-ADP
linux_kernelsee advisory–CISA-ADP
linux_kernelsee advisory6.6.31CISA-ADP
linux_kernelsee advisory6.8.10CISA-ADP
by Kastro