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sgidec: safer check for buffer overflow 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-07-26 21:53:54 +00:00
parent 997e2b59e3
commit 86e722ab97
1 changed files with 1 additions and 1 deletions
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2
libavcodec/sgidec.c
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@ -58,7 +58,7 @@ static int expand_rle_row(SgiState *s, uint8_t *out_buf,
}
/* Check for buffer overflow. */
if (out_buf + pixelstride * (count - 1) >= out_end)
if (out_end - out_buf <= pixelstride * (count - 1))
return AVERROR_INVALIDDATA;
if (pixel & 0x80) {