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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-22 23:10:09 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-25 14:51:53 +0300 |
| commit | 399670d66893d2f84d1a2dfabebab3c227454431 (patch) | |
| tree | ed97c99c587ab02f76a549c9646d2f12e169049d | |
| parent | 7e2559982f162846748a1aa0bb71ee8ea5eb26f6 (diff) | |
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 53e939d35d..6cc9a0c9ae 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; |