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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-03-26 02:52:04 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-03-26 23:19:49 +0100 |
| commit | ebdcf9849905fdd67dcd3ab93e55e47ded35fda2 (patch) | |
| tree | 8d051e7f8670b9d63a472c4d8a5e4c6676789df4 /libavcodec | |
| parent | d188a867302fd745b5980a90a0b5cad9016c477c (diff) | |
| download | ffmpeg-ebdcf9849905fdd67dcd3ab93e55e47ded35fda2.tar.gz | |
avcodec/truemotion1: Height not being a multiple of 4 is unsupported
mb_change_bits is given space based on height >> 2, while more data is read
Fixes: out of array access
Fixes: 62285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION1_fuzzer-5201925062590464.fuzz
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')
| -rw-r--r-- | libavcodec/truemotion1.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/truemotion1.c b/libavcodec/truemotion1.c index 6b0ee22569..784576d01b 100644 --- a/libavcodec/truemotion1.c +++ b/libavcodec/truemotion1.c @@ -408,6 +408,11 @@ static int truemotion1_decode_header(TrueMotion1Context *s) return AVERROR_PATCHWELCOME; } + if (s->h & 3) { + avpriv_request_sample(s->avctx, "Frame with height not being a multiple of 4"); + return AVERROR_PATCHWELCOME; + } + if (s->w != s->avctx->width || s->h != s->avctx->height || new_pix_fmt != s->avctx->pix_fmt) { av_frame_unref(s->frame); |