thermal: core: prevent potential string overflow
authorDan Carpenter <dan.carpenter@linaro.org>
Sat, 7 Oct 2023 08:59:39 +0000 (11:59 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 20 Nov 2023 10:59:01 +0000 (11:59 +0100)
commitedbd6bbe40ac524a8f2273ffacc53edf14f3c686
treeb4e8042d823a0a08f6b1c5b8801ed089dd69545e
parente63489aa19707625afb9078295adf8577e7d5343
thermal: core: prevent potential string overflow

[ Upstream commit c99626092efca3061b387043d4a7399bf75fbdd5 ]

The dev->id value comes from ida_alloc() so it's a number between zero
and INT_MAX.  If it's too high then these sprintf()s will overflow.

Fixes: 203d3d4aa482 ("the generic thermal sysfs driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/thermal/thermal_core.c