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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-04 17:20:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | 231f9d0302df4fac81e37661ef07deef97e429e4 (patch) | |
| tree | 4d99225b6e2e1b2aa113bf1e42e406d92a8b82bd | |
| parent | f382c6498c6fc7292992b8e2a86ec4767dbdd2ff (diff) | |
| download | ffmpeg-231f9d0302df4fac81e37661ef07deef97e429e4.tar.gz | |
avcodec/ralf: Fix integer overflow in apply_lpc()
Fixes: signed integer overflow: 1603085316 + 1238786562 cannot be represented in type 'int'
Fixes: 16203/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RALF_fuzzer-5086088934195200
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 ccca484324e04dff4cb81d0f9018ae828e6b5c89)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ralf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ralf.c b/libavcodec/ralf.c index 3f7953c6db..0d6b57d652 100644 --- a/libavcodec/ralf.c +++ b/libavcodec/ralf.c @@ -323,7 +323,7 @@ static void apply_lpc(RALFContext *ctx, int ch, int length, int bits) acc = 0; for (j = 0; j < flen; j++) - acc += ctx->filter[j] * audio[i - j - 1]; + acc += (unsigned)ctx->filter[j] * audio[i - j - 1]; if (acc < 0) { acc = (acc + bias - 1) >> ctx->filter_bits; acc = FFMAX(acc, min_clip); |