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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-05-25 22:58:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-06-18 14:29:11 +0200 |
| commit | 1ee303f1e1677fd997da05ae1cc6aca064f96bdb (patch) | |
| tree | feae9c348e38ba4219d4f48b813ab3e6620613f3 /libavcodec/rka.c | |
| parent | fead656a7bf523d448fe8bd39c1f2ea36be98fb9 (diff) | |
| download | ffmpeg-1ee303f1e1677fd997da05ae1cc6aca064f96bdb.tar.gz | |
avcodec/rka: Avoid undefined left shift
Fixes: left shift of 34136248 by 6 places cannot be represented in type 'int'
Fixes: 58429/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-5692211592560640
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/rka.c b/libavcodec/rka.c index e0ed8c16e4..76dca52602 100644 --- a/libavcodec/rka.c +++ b/libavcodec/rka.c @@ -750,7 +750,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns } if (ctx->cmode2 != 0) { int sum = 0; - for (int i = (m << 6) / split; i > 0; i = i >> 1) + for (int i = (signed)((unsigned)m << 6) / split; i > 0; i = i >> 1) sum++; sum = sum - (ctx->cmode2 + 7); ctx->cmode = FFMAX(sum, tab[ctx->cmode2]); |