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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-06-08 15:05:50 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-06-18 14:29:11 +0200 |
| commit | e736238b35a1e0f69fe8e5a9a7359ba24883c488 (patch) | |
| tree | 45beb62b051f09b18f71d1eb61107f3315838338 /libavcodec/rka.c | |
| parent | 1ee303f1e1677fd997da05ae1cc6aca064f96bdb (diff) | |
| download | ffmpeg-e736238b35a1e0f69fe8e5a9a7359ba24883c488.tar.gz | |
avcodec/rka: use unsigned for buf0 additions
Fixes: signed integer overflow: -38912000 + -2109276160 cannot be represented in type 'int'
Fixes: 59670/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-4987563245699072
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/rka.c')
| -rw-r--r-- | libavcodec/rka.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/rka.c b/libavcodec/rka.c index 76dca52602..d56f4faee4 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -735,10 +735,10 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns ctx->buf1[off] = (val + (sum >> bits)) * (1U << bits) + (((1U << bits) - 1U) & ctx->buf1[off + -1]); } - ctx->buf0[off] = ctx->buf1[off] + ctx->buf0[off + -1]; + ctx->buf0[off] = ctx->buf1[off] + (unsigned)ctx->buf0[off + -1]; } else { val *= 1U << ctx->cmode; - sum += ctx->buf0[off + -1] + val; + sum += ctx->buf0[off + -1] + (unsigned)val; switch (s->bps) { case 16: sum = av_clip_int16(sum); break; case 8: sum = av_clip_int8(sum); break; |