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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-20 20:24:21 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-05-27 17:43:40 +0200 |
| commit | 48342aa0750f83006582d1598b5f22297f6dbf83 (patch) | |
| tree | e7258ce54be17d3784289f0d1f96aefc58a48810 /libavcodec/exr.c | |
| parent | b752d195cc527c0147bad97767632de75e1be0d9 (diff) | |
| download | ffmpeg-48342aa0750f83006582d1598b5f22297f6dbf83.tar.gz | |
avcodec/exr: x/ymax cannot be INT_MAX
The code uses x/ymax + 1 so the maximum is INT_MAX-1
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 33158/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5545462457303040
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/exr.c')
| -rw-r--r-- | libavcodec/exr.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/exr.c b/libavcodec/exr.c index fed4c127b8..9377a89169 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1795,6 +1795,7 @@ static int decode_header(EXRContext *s, AVFrame *frame) ymax = bytestream2_get_le32(gb); if (xmin > xmax || ymin > ymax || + ymax == INT_MAX || xmax == INT_MAX || (unsigned)xmax - xmin >= INT_MAX || (unsigned)ymax - ymin >= INT_MAX) { ret = AVERROR_INVALIDDATA; |