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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-05 02:17:40 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-25 21:41:35 +0200 |
| commit | d897f82cf8f39cdb770ab433b018ebd840bb2237 (patch) | |
| tree | 48fd183cff6abea75ee127edbe6a61b9587cd192 | |
| parent | fb05bc8eee95e1b08b6d30fbb611161c4feaf76b (diff) | |
| download | ffmpeg-d897f82cf8f39cdb770ab433b018ebd840bb2237.tar.gz | |
avcodec/vmixdec: Fix signed integer overflow in dc
Fixes: signed integer overflow: 2147483181 + 1024 cannot be represented in type 'int'
Fixes: 61117/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VMIX_fuzzer-5387692433866752
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/vmixdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/vmixdec.c b/libavcodec/vmixdec.c index 962ab8339b..d6b6e3557f 100644 --- a/libavcodec/vmixdec.c +++ b/libavcodec/vmixdec.c @@ -148,7 +148,7 @@ static int decode_dcac(AVCodecContext *avctx, ac_run = get_ue_golomb_long(ac_gb); } - block[0] = (dc << lshift) + add; + block[0] = ((unsigned)dc << lshift) + (unsigned)add; s->idsp.idct_put(dst + x, linesize, block); } |