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avcodec/rka: check for size 1 filter 

Such filters will not advance and be stuck in the current implementation

Fixes: Infinite loop
Fixes: 56052/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-5236218750435328

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-02-20 20:00:44 +01:00
parent d495747a9f
commit 8874cfa2e1
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1 changed files with 1 additions and 1 deletions
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libavcodec/rka.c
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@ -691,7 +691,7 @@ static int decode_filter(RKAContext *s, ChContext *ctx, ACoder *ac, int off, uns
else
split = size >> 4;
if (size <= 0)
if (size <= 1)
return 0;
for (int x = 0; x < size;) {