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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-22 22:10:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-08-28 23:07:07 +0200 |
| commit | 5a2bb107331abc0126f35b08a151bbfb276cf92b (patch) | |
| tree | e8bd811abbeeb6d0c5cb6a5cadd63422d6335335 | |
| parent | 550fd2212df136f72b0d7c34190320ff7b9d299c (diff) | |
| download | ffmpeg-5a2bb107331abc0126f35b08a151bbfb276cf92b.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 95a35159e3..292aa03c6b 100644 --- a/libavcodec/8bps.c +++ b/libavcodec/8bps.c @@ -71,6 +71,9 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, 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; |