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ws_snd1: Fix wrong samples counts.

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This makes the check that avoids overwrite of the samples array actually
work properly.

fixes CVE-2012-0848
CC: libav-stable@libav.org

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
This commit is contained in:
Michael Niedermayer 2011-12-25 00:10:27 +01:00 committed by Justin Ruggles
parent 51df7b232f
commit 9fb7a5af97
1 changed files with 2 additions and 2 deletions
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4
libavcodec/ws-snd1.c
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@ -112,8 +112,8 @@ static int ws_snd_decode_frame(AVCodecContext *avctx, void *data,
/* make sure we don't write past the output buffer */ /* make sure we don't write past the output buffer */
switch (code) { switch (code) {
case 0: smp = 4; break; case 0: smp = 4 * (count + 1); break;
case 1: smp = 2; break; case 1: smp = 2 * (count + 1); break;
case 2: smp = (count & 0x20) ? 1 : count + 1; break; case 2: smp = (count & 0x20) ? 1 : count + 1; break;
default: smp = count + 1; break; default: smp = count + 1; break;
} }