From 3b57bb478ff4455773378355e285877d757e151e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 7 Jan 2013 23:42:35 +0100 Subject: [PATCH] svq1dec: check that the reference frame matches in size before using it. Fixes out of array reads Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/svq1dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c index 187522c3bf..573568374a 100644 --- a/libavcodec/svq1dec.c +++ b/libavcodec/svq1dec.c @@ -692,7 +692,7 @@ static int svq1_decode_frame(AVCodecContext *avctx, void *data, } else { /* delta frame */ uint8_t *previous = s->prev->data[i]; - if (!previous) { + if (!previous || s->prev->width != s->cur->width || s->prev->height != s->cur->height) { av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); result = AVERROR_INVALIDDATA; goto err;