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authorGeert Uytterhoeven <geert@linux-m68k.org>2018-04-08 11:02:34 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-23 13:40:15 +0200
commite33bbe69149b802c0c77bfb822685772f85388ca (patch)
tree2e7435326efad5203215da05726c69c5696498be /drivers/slimbus
parent4aa403b775fc027ee86d9a090a4c5c3ee9063089 (diff)
downloadlinux-e33bbe69149b802c0c77bfb822685772f85388ca.tar.bz2
slimbus: Fix out-of-bounds access in slim_slicesize()
With gcc-4.1.2: slimbus/messaging.c: In function ‘slim_slicesize’: slimbus/messaging.c:186: warning: statement with no effect Indeed, clamp() is a macro not operating in-place, but returning the clamped value. Hence the value is not clamped at all, which may lead to an out-of-bounds access. Fix this by assigning the clamped value. Fixes: afbdcc7c384b0d44 ("slimbus: Add messaging APIs to slimbus framework") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/slimbus')
-rw-r--r--drivers/slimbus/messaging.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/slimbus/messaging.c b/drivers/slimbus/messaging.c
index 884419c37e84..457ea1f8db30 100644
--- a/drivers/slimbus/messaging.c
+++ b/drivers/slimbus/messaging.c
@@ -183,7 +183,7 @@ static u16 slim_slicesize(int code)
0, 1, 2, 3, 3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7
};
- clamp(code, 1, (int)ARRAY_SIZE(sizetocode));
+ code = clamp(code, 1, (int)ARRAY_SIZE(sizetocode));
return sizetocode[code - 1];
}