Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 12:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

intel_scu_ipcutil: underflow in scu_reg_access()

Browse Source 
"count" is controlled by the user and it can be negative.  Let's prevent
that by making it unsigned.  You have to have CAP_SYS_RAWIO to call this
function so the bug is not as serious as it could be.

Fixes: 5369c02d95 ('intel_scu_ipc: Utility driver for intel scu ipc')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Dan Carpenter 2016-01-26 12:24:25 +03:00 committed by Darren Hart
parent 1c319e781e
commit b1d353ad3d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/platform/x86/intel_scu_ipcutil.c
View File

@ -49,7 +49,7 @@ struct scu_ipc_data {
static int scu_reg_access(u32 cmd, struct scu_ipc_data *data)
{
int count = data->count;
unsigned int count = data->count;
if (count == 0 || count == 3 || count > 4)
return -EINVAL;