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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-01-16 00:01:13 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-21 01:55:12 +0200 |
| commit | 1f8a4e35a1cfbaf4418a50505a31c0f2797a65ab (patch) | |
| tree | f42ac3cc666c805a44608dc921da8f62083ff70d | |
| parent | 85b4c5c10667d68130f11f601b139bdc10bb17b8 (diff) | |
| download | ffmpeg-1f8a4e35a1cfbaf4418a50505a31c0f2797a65ab.tar.gz | |
avcodec/scpr3: Check bx
Fixes: Out of array access
Fixes: 55102/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-4877396618903552
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 cc7e984a05b28dcfaaaad95afa061be71b4ba7fc)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/scpr3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/scpr3.c b/libavcodec/scpr3.c index 1ed764baa1..f56ae19118 100644 --- a/libavcodec/scpr3.c +++ b/libavcodec/scpr3.c @@ -1184,6 +1184,9 @@ static int decompress_p3(AVCodecContext *avctx, int run, bx = x * 16 + sx1, by = y * 16 + sy1; uint32_t clr, ptype = 0, r, g, b; + if (bx >= avctx->width) + return AVERROR_INVALIDDATA; + for (; by < y * 16 + sy2 && by < avctx->height;) { ret = decode_value3(s, 5, &s->op_model3[ptype].cntsum, s->op_model3[ptype].freqs[0], |