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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-07-31 21:17:23 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-08-10 18:05:13 +0200 |
| commit | f803635c4fac761ac68b39a369272d4c26433dc1 (patch) | |
| tree | 2a194d38a7886a208ebe650fa112b386d73eac3f /libavcodec/faxcompr.c | |
| parent | 643b2d49bf52d5a3205ce3db732e0c4c396bd457 (diff) | |
| download | ffmpeg-f803635c4fac761ac68b39a369272d4c26433dc1.tar.gz | |
avcodec/faxcompr: Check for end of input in cmode == 1 in decode_group3_2d_line()
Fixes: Infinite loop
Fixes: 35591/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-4503764022198272
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/faxcompr.c')
| -rw-r--r-- | libavcodec/faxcompr.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c index 44c1f6f6b9..b283831dae 100644 --- a/libavcodec/faxcompr.c +++ b/libavcodec/faxcompr.c @@ -283,6 +283,8 @@ static int decode_group3_2d_line(AVCodecContext *avctx, GetBitContext *gb, for (k = 0; k < 2; k++) { run = 0; for (;;) { + if (get_bits_left(gb) <= 0) + return AVERROR_INVALIDDATA; t = get_vlc2(gb, ccitt_vlc[mode].table, 9, 2); if (t == -1) { av_log(avctx, AV_LOG_ERROR, "Incorrect code\n"); |