avcodec/sunrast: Fix input buffer pointer check

Fixes: out of array read
Fixes: poc.dat

Found-by: Bingchang, Liu @VARAS of IIE
Tested-by: bc L <l.bing.chang.bc@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-01 19:24:49 +01:00
parent d401c37ef5
commit 37138338ff

View File

@ -168,7 +168,7 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
}
} else {
for (y = 0; y < h; y++) {
if (buf_end - buf < len)
if (buf_end - buf < alen)
break;
memcpy(ptr, buf, len);
ptr += stride;