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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-22 22:10:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-10-09 22:15:45 +0200 |
| commit | 82e77e0dece2ef75fbcc8ae4c51bd44d51e912d1 (patch) | |
| tree | 6ff0f225a78f202fddd49e740f69d24ff88b2c81 | |
| parent | 37139adfbfcc5daea7d04be6294c2511c1e1e4e4 (diff) | |
| download | ffmpeg-82e77e0dece2ef75fbcc8ae4c51bd44d51e912d1.tar.gz | |
libavcodec/8bps: Check that line lengths fit within the buffer
Fixes: Timeout
Fixes: undefined pointer arithmetic
Fixes: 50330/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EIGHTBPS_fuzzer-5436287485607936
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 2316d5ec1a95b13ff9a0ce80409fa367a041966d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/8bps.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/8bps.c b/libavcodec/8bps.c index aa2318fa2d..655c62725b 100644 --- a/libavcodec/8bps.c +++ b/libavcodec/8bps.c @@ -70,6 +70,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, unsigned char *planemap = c->planemap; int ret; + if (buf_size < planes * height *2) + return AVERROR_INVALIDDATA; + if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) return ret; |