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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-02-20 20:04:18 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-02-25 21:08:03 +0100 |
| commit | 8a6c037acd0b163ca737015e28164126d276b704 (patch) | |
| tree | 49e8ee918d84bbefdb54a9dcd1b6de6f5fa9f599 | |
| parent | b59152b4746e576c9deede398ba0f8e05f5b27c9 (diff) | |
| download | ffmpeg-8a6c037acd0b163ca737015e28164126d276b704.tar.gz | |
avcodec/rka: avoid negative value shift
Fixes: left shift of negative value -81
Fixes: 56061/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-4649758062149632
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 a5d4e7e3f981ce90b92a9da7da26a3c2a2e061e9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/rka.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/rka.c b/libavcodec/rka.c index 7452acf27f..1eb2289e58 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -737,7 +737,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns } ctx->buf0[off] = ctx->buf1[off] + ctx->buf0[off + -1]; } else { - val <<= ctx->cmode; + val *= 1 << ctx->cmode; sum += ctx->buf0[off + -1] + val; switch (s->bps) { case 16: sum = av_clip_int16(sum); break; |