From 79891f5b87baa9c17366a84950cb81b8f4f6e5f1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 4 Oct 2014 04:29:40 +0200 Subject: [PATCH] avformat/mpegts: Check desc_len / get8() return code Fixes out of array read Fixes: signal_sigsegv_844d59_10_signal_sigsegv_a17bb7_366_mpegts_mpeg2video_mp2_dvbsub_topfield.rec Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer (cherry picked from commit c3d7f00ee3e09801f56f25db8b5961f25e842bd2) Signed-off-by: Michael Niedermayer --- libavformat/mpegts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c index bcf9b00814..28ec4926f5 100644 --- a/libavformat/mpegts.c +++ b/libavformat/mpegts.c @@ -1240,7 +1240,7 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len break; desc_len = get8(&p, desc_list_end); desc_end = p + desc_len; - if (desc_end > desc_list_end) + if (desc_len < 0 || desc_end > desc_list_end) break; av_dlog(ts->stream, "tag: 0x%02x len=%d\n",