From 0b300daad2f5cb59a7c06dde5ac701685e6edf16 Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Wed, 21 Nov 2012 19:41:59 +0100 Subject: [PATCH] h264: error out on unset current_picture_ptr for h->current_slice > 0 Fixes a segfault with fuzzed sample sample_varPAR_s11622_r001-02.avi. CC: libav-stable@libav.org --- libavcodec/h264.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/h264.c b/libavcodec/h264.c index e3075cbe6f..7bdd6f1ed2 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -2624,6 +2624,11 @@ static int decode_slice_header(H264Context *h, H264Context *h0) s->picture_structure = last_pic_structure; s->dropable = last_pic_dropable; return AVERROR_INVALIDDATA; + } else if (!s->current_picture_ptr) { + av_log(s->avctx, AV_LOG_ERROR, + "unset current_picture_ptr on %d. slice\n", + h0->current_slice + 1); + return AVERROR_INVALIDDATA; } } else { /* Shorten frame num gaps so we don't have to allocate reference