[FFmpeg-devel] [PATCH 5/6] avcodec/flicvideo: Fix off by 1 error in flic_decode_frame_24BPP()

[Michael Niedermayer]

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 at niedermayer.cc>
---
 libavcodec/flicvideo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c
index cd9cd089af..2474a9ca72 100644
--- a/libavcodec/flicvideo.c
+++ b/libavcodec/flicvideo.c
@@ -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);
-- 
2.22.0