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avcodec/sgidec: fix count check

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Fixes: asan_heap-oob_22b30d4_39_038.sgi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-27 20:48:58 +01:00
parent 3b20ed8548
commit a050cf0c45
1 changed files with 1 additions and 1 deletions
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libavcodec/sgidec.c
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@ -98,7 +98,7 @@ static int expand_rle_row16(SgiState *s, uint16_t *out_buf,
break;
/* Check for buffer overflow. */
if (pixelstride * (count - 1) >= len) {
if (out_end - out_buf <= pixelstride * (count - 1)) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid pixel count.\n");
return AVERROR_INVALIDDATA;
}