github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 22:22:08 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

zd1211rw: fix NULL-deref at probe

Browse Source 
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.

Fixes: a1030e92c1 ("[PATCH] zd1211rw: Convert installer CDROM device into WLAN device")
Cc: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Johan Hovold 2017-03-13 13:44:21 +01:00 committed by Kalle Valo
parent 5ce33b6030
commit ca260ece6a
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/zydas/zd1211rw/zd_usb.c
View File

@ -1278,6 +1278,9 @@ static int eject_installer(struct usb_interface *intf)
u8 bulk_out_ep;
int r;
if (iface_desc->desc.bNumEndpoints < 2)
return -ENODEV;
/* Find bulk out endpoint */
for (r = 1; r >= 0; r--) {
endpoint = &iface_desc->endpoint[r].desc;