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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-20 20:24:21 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-09 22:02:20 +0200 |
| commit | 68d77a55801ac16247120765cd7532a9e173c451 (patch) | |
| tree | 072d67405d1b2271b230270614968b61eb0bc2d6 | |
| parent | 4588d46c378303445f86973beff00e555f69ecca (diff) | |
| download | ffmpeg-68d77a55801ac16247120765cd7532a9e173c451.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>
(cherry picked from commit 48342aa0750f83006582d1598b5f22297f6dbf83)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -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 8c3427c21b..bd82017b98 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1493,6 +1493,7 @@ static int decode_header(EXRContext *s) ymax = bytestream2_get_le32(&s->gb); if (xmin > xmax || ymin > ymax || + ymax == INT_MAX || xmax == INT_MAX || (unsigned)xmax - xmin >= INT_MAX || (unsigned)ymax - ymin >= INT_MAX) { return AVERROR_INVALIDDATA; |