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avcodec/flicvideo: Fix off by 1 error in flic_decode_frame_24BPP()

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Fixes: out of array access
Fixes: 15360/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLIC_fuzzer-5653837190266880
Fixes: 15412/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLIC_fuzzer-5740537648250880

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 37708cbae8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2019-06-21 23:45:36 +02:00
parent 4d7ee3b0ff
commit 10880dd695
1 changed files with 1 additions and 1 deletions
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libavcodec/flicvideo.c
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@@ -900,7 +900,7 @@ static int flic_decode_frame_24BPP(AVCodecContext *avctx,
} else {
if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
break;
CHECK_PIXEL_PTR(2 * byte_run);
CHECK_PIXEL_PTR(3 * byte_run);
for (j = 0; j < byte_run; j++, pixel_countdown--) {
pixel = bytestream2_get_le24(&g2);
AV_WL24(&pixels[pixel_ptr], pixel);