intel_scu_ipcutil: underflow in scu_reg_access()

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[ Upstream commit b1d353ad3d ]

"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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

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Dan Carpenter 2016-01-26 12:24:25 +03:00 • committed by Sasha Levin

parent f67924cc39

commit ebd79bf31a

1 changed files with 1 additions and 1 deletions

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drivers/platform/x86/intel_scu_ipcutil.c

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