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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-15 20:08:22 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-06 13:54:16 +0200 |
| commit | 33dc68cad18ee430017fcbb390aa325f335371be (patch) | |
| tree | bad35b659bb17a2f9f402abac31e8951812c6d50 | |
| parent | 5ca2f59b8989e8c80fa86d357e4249a923898d0d (diff) | |
| download | ffmpeg-33dc68cad18ee430017fcbb390aa325f335371be.tar.gz | |
avcodec/faxcompr: Check remaining bits on error in decode_group3_1d_line()
Fixes: Timeout
Fixes: 32886/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-4779761466474496
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7b3881f0da6da00cb6b5b123328e2fbfca936c47)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/faxcompr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c index 2a1d2bc3f6..400458b994 100644 --- a/libavcodec/faxcompr.c +++ b/libavcodec/faxcompr.c @@ -224,7 +224,7 @@ static int decode_group3_1d_line(AVCodecContext *avctx, GetBitContext *gb, run = 0; mode = !mode; } else if ((int)t == -1) { - if (show_bits(gb, 12) == 15) { + if (get_bits_left(gb) > 12 && show_bits(gb, 12) == 15) { int ret; skip_bits(gb, 12); ret = decode_uncompressed(avctx, gb, &pix_left, &runs, runend, &mode); |