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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-01-11 20:42:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-21 01:55:15 +0200 |
| commit | 7cba5ebd7dd735c8c50046e300534a9591ecafb1 (patch) | |
| tree | 150d4d268664661a94694ee622cc001f908c938d | |
| parent | 94687a5eff3daee51d64ee5e6a143cded942076a (diff) | |
| download | ffmpeg-7cba5ebd7dd735c8c50046e300534a9591ecafb1.tar.gz | |
avcodec/bink: Fix off by 1 error in ref end
Fixes: out of array access
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINK_fuzzer-6657932926517248
Alterantivly to this it is possibly to allocate a bigger array
Note: oss-fuzz assigned this issue to a unrelated theora bug so the bug number matches that
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 49487045dde6f69194332aac51fd4e598e19c7b6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/bink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/bink.c b/libavcodec/bink.c index 5834b4e465..0dced3c7ad 100644 --- a/libavcodec/bink.c +++ b/libavcodec/bink.c @@ -838,7 +838,7 @@ static int binkb_decode_plane(BinkContext *c, AVFrame *frame, GetBitContext *gb, binkb_init_bundles(c); ref_start = frame->data[plane_idx]; - ref_end = frame->data[plane_idx] + (bh * frame->linesize[plane_idx] + bw) * 8; + ref_end = frame->data[plane_idx] + (bh * frame->linesize[plane_idx] + bw - 1) * 8; for (i = 0; i < 64; i++) coordmap[i] = (i & 7) + (i >> 3) * stride; |