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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-04 19:35:15 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-11 20:18:48 +0100 |
| commit | fcd38fcb1e04564b3f306926c41ec48e16398615 (patch) | |
| tree | 5077b1e27603bde5c170fd3ef44505ce69b53ad0 /libavcodec/alsdec.c | |
| parent | 15320f81074ba238025aae2a42b967421d76e24d (diff) | |
| download | ffmpeg-fcd38fcb1e04564b3f306926c41ec48e16398615.tar.gz | |
avcodec/alsdec: Check that input space for header exists in read_diff_float_data()
Fixes: Timeout (21sec -> 8sec)
Fixes: 17832/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5737092172218368
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 09581f7923ed9af7719762868e8f1ff626ea8374)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/alsdec.c')
| -rw-r--r-- | libavcodec/alsdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 56313d206c..3819307fbf 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1475,6 +1475,9 @@ static int read_diff_float_data(ALSDecContext *ctx, unsigned int ra_frame) { ff_mlz_flush_dict(ctx->mlz); } + if (avctx->channels * 8 > get_bits_left(gb)) + return AVERROR_INVALIDDATA; + for (c = 0; c < avctx->channels; ++c) { if (use_acf) { //acf_flag |