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| author | Michael Niedermayer <michael@niedermayer.cc> | 2025-05-11 23:09:07 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2025-05-15 03:03:57 +0200 |
| commit | 8e6db875afcd147d48718130fde4a05c3ac406db (patch) | |
| tree | 4e4e0057734e000a1826e16ff01e29973e428ae6 | |
| parent | 4a9d907b5eb93c0efe09ddd947ae5f462689f6f2 (diff) | |
| download | ffmpeg-8e6db875afcd147d48718130fde4a05c3ac406db.tar.gz | |
avcodec/takdec: Check remaining space for first predictors
Fixes: Timeout
Fixes: 403673829/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TAK_fuzzer-5498240154009600
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/takdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c index 74c8d7c7a8..1e6e6caebd 100644 --- a/libavcodec/takdec.c +++ b/libavcodec/takdec.c @@ -434,6 +434,9 @@ static int decode_subframe(TAKDecContext *s, int32_t *decoded, return AVERROR_INVALIDDATA; } + if (get_bits_left(gb) < 2*10 + 2*size) + return AVERROR_INVALIDDATA; + s->predictors[0] = get_sbits(gb, 10); s->predictors[1] = get_sbits(gb, 10); s->predictors[2] = get_sbits(gb, size) * (1 << (10 - size)); |