On Thu, Jan 04, 2024 at 03:56:16PM +0530, Udipto Goswami wrote:
Currently,the function update_port_device_state gets the usb_hub from
udev->parent by calling usb_hub_to_struct_hub.
However, in case the actconfig or the maxchild is 0, the usb_hub would
be NULL and upon further accessing to get port_dev would result in null
pointer dereference.
Is this true for any real (or fake) hardware?
Got it, I'll take care of it in next version.
Fix this by introducing an if check after the usb_hub is populated.
Fixes: 83cb2604f641 ("usb: core: add sysfs entry for usb device state")
Signed-off-by: Udipto Goswami <quic_ugoswami@xxxxxxxxxxx>
Any specific reason you don't want this backported to the stable kernels
that include the commit you marked this as a fix for?
As my bot says:
- You have marked a patch with a "Fixes:" tag for a commit that is in an
older released kernel, yet you do not have a cc: stable line in the
signed-off-by area at all, which means that the patch will not be
applied to any older kernel releases. To properly fix this, please
follow the documented rules in the
Documentation/process/stable-kernel-rules.rst file for how to resolve
this.