From 2d8d554f15a7a27cfeca81467cc9341a86f784e2 Mon Sep 17 00:00:00 2001 From: Dale Curtis Date: Thu, 14 May 2020 15:31:55 -0700 Subject: [PATCH] avformat/mov: Don't allow negative sample sizes. Signed-off-by: Dale Curtis Signed-off-by: Michael Niedermayer --- libavformat/mov.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index ad718cdaa2..93648994eb 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -2885,6 +2885,10 @@ static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom) for (i = 0; i < entries && !pb->eof_reached; i++) { sc->sample_sizes[i] = get_bits_long(&gb, field_size); + if (sc->sample_sizes[i] < 0) { + av_log(c->fc, AV_LOG_ERROR, "Invalid sample size %d\n", sc->sample_sizes[i]); + return AVERROR_INVALIDDATA; + } sc->data_size += sc->sample_sizes[i]; }