forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow

Browse source 
[ Upstream commit 713baf3dae ]

An earlier commit replaced using batostr to using %pMR sprintf for the
construction of session->name. Static analysis detected that this new
method can use a total of 21 characters (including the trailing '\0')
so we need to increase the BTNAMSIZ from 18 to 21 to fix potential
buffer overflows.

Addresses-Coverity: ("Out-of-bounds write")
Fixes: fcb73338ed ("Bluetooth: Use %pMR in sprintf/seq_printf instead of batostr")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Colin Ian King 2021-08-04 16:09:51 +01:00 • committed by Greg Kroah-Hartman
commit 5014a8453f
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
net/bluetooth/cmtp/cmtp.h
View file

@ -26,7 +26,7 @@
#include <linux/types.h>
#include <net/bluetooth/bluetooth.h>
#define BTNAMSIZ 18
#define BTNAMSIZ 21
/* CMTP ioctl defines */
#define CMTPCONNADD _IOW('C', 200, int)