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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-08-24 13:04:38 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-26 16:58:32 +0100 |
| commit | 221abc1ef63ae962e57bc98801f61b6f580d17ae (patch) | |
| tree | 32cf7f63adbb5376306377e46e140a2c27698533 | |
| parent | df27f8d5fd727135bbfefb9a1e45fd4569773a70 (diff) | |
| download | ffmpeg-221abc1ef63ae962e57bc98801f61b6f580d17ae.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 9932d92298..f403e1c522 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] |