d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix for reading the configuration descriptor in libusb. Catch invalid

Browse Source 
configuration descriptor reads early on to avoid issues with devices
that don't check for a valid USB configuration read request.

Submitted by:	takahiro.kurosawa@gmail.com
PR:		238412
MFC after:	3 days
This commit is contained in:
Hans Petter Selasky 2019-06-08 09:34:02 +00:00
parent a9de4100e6
commit 08216d1854
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/libusb/libusb20.c
View File

@ -955,6 +955,14 @@ libusb20_dev_alloc_config(struct libusb20_device *pdev, uint8_t configIndex)
uint8_t do_close;
int error;
/*
* Catch invalid configuration descriptor reads early on to
* avoid issues with devices that don't check for a valid USB
* configuration read request.
*/
if (configIndex >= pdev->ddesc.bNumConfigurations)
return (NULL);
if (!pdev->is_opened) {
error = libusb20_dev_open(pdev, 0);
if (error) {