A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

Bluetooth: RFCOMM - Fix info leak in ioctl(RFCOMMGETDEVLIST)

Browse source 
The RFCOMM code fails to initialize the two padding bytes of struct
rfcomm_dev_list_req inserted for alignment before copying it to
userland. Additionally there are two padding bytes in each instance of
struct rfcomm_dev_info. The ioctl() that for disclosures two bytes plus
dev_num times two bytes uninitialized kernel heap memory.

Allocate the memory using kzalloc() to fix this issue.

Signed-off-by: Mathias Krause <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Johan Hedberg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Mathias Krause 2012-08-15 11:31:49 +00:00 • committed by David S. Miller
commit f9432c5ec8
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
net/bluetooth/rfcomm/tty.c
View file

@ -456,7 +456,7 @@ static int rfcomm_get_dev_list(void __user *arg)
size = sizeof(*dl) + dev_num * sizeof(*di);
dl = kmalloc(size, GFP_KERNEL);
dl = kzalloc(size, GFP_KERNEL);
if (!dl)
return -ENOMEM;