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| author | Michael Niedermayer <[email protected]> | 2024-08-16 16:00:01 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2024-12-04 04:23:49 +0100 |
| commit | 7c1e732ad2e240af5afe9ffea443c91bb233aa65 (patch) | |
| tree | d9efd2842280dc8dcfed3b8d348c804a98bed8b9 | |
| parent | 4482218440534804d067de00ee1a4bc493c8b41d (diff) | |
avcodec/webp: Check ref_x/y
Fixes: 70991/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WEBP_fuzzer-5544067620995072
Fixes: use of uninintailized value
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/webp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/webp.c b/libavcodec/webp.c index 7c2a5f0111..b624458d67 100644 --- a/libavcodec/webp.c +++ b/libavcodec/webp.c @@ -704,6 +704,9 @@ static int decode_entropy_coded_image(WebPContext *s, enum ImageRole role, ref_x = FFMAX(0, ref_x); ref_y = FFMAX(0, ref_y); + if (ref_y == y && ref_x >= x) + return AVERROR_INVALIDDATA; + /* copy pixels * source and dest regions can overlap and wrap lines, so just * copy per-pixel */ |