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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-08-24 13:04:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-12 02:55:45 +0100 |
| commit | 679df05683e6a36e3af4d98a65248debc472ed7d (patch) | |
| tree | 84b21eebdfe8c894f3fc141ede03301a76fc7770 | |
| parent | 717c3ebfa46fac9d51dec9e079fdbc9e4652a9ac (diff) | |
| download | ffmpeg-679df05683e6a36e3af4d98a65248debc472ed7d.tar.gz | |
avformat/hevc: Check num_long_term_ref_pics_sps to avoid potentially long loops
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit ee155c18a2c50b339ba5f6f223fbb6dc343fd471)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/hevc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/hevc.c b/libavformat/hevc.c index c3257fffd1..f0cbab8e67 100644 --- a/libavformat/hevc.c +++ b/libavformat/hevc.c @@ -566,6 +566,8 @@ static int hvcc_parse_sps(GetBitContext *gb, if (get_bits1(gb)) { // long_term_ref_pics_present_flag unsigned num_long_term_ref_pics_sps = get_ue_golomb_long(gb); + if (num_long_term_ref_pics_sps > 31U) + return AVERROR_INVALIDDATA; for (i = 0; i < num_long_term_ref_pics_sps; i++) { // num_long_term_ref_pics_sps int len = FFMIN(log2_max_pic_order_cnt_lsb_minus4 + 4, 16); skip_bits (gb, len); // lt_ref_pic_poc_lsb_sps[i] |