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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-18 01:54:43 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-16 01:05:27 +0200 |
| commit | 70247373a1c73099bf2f799556a4a0495fe540c6 (patch) | |
| tree | 7a23cb6a5698044da7ffbeb52c1a4e2287a5921f | |
| parent | dd01941b9a74df0eb55a3ea96642f9a90cc8e2b5 (diff) | |
| download | ffmpeg-70247373a1c73099bf2f799556a4a0495fe540c6.tar.gz | |
avcodec/dfa: Fix: runtime error: signed integer overflow: -14202 * 196877 cannot be represented in type 'int'
Fixes: 1657/clusterfuzz-testcase-minimized-4710000079405056
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 58ac7fb9c395ab91cb321fa4c8c9e127ce8147c3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dfa.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dfa.c b/libavcodec/dfa.c index 3ea12f0511..8067ac94e5 100644 --- a/libavcodec/dfa.c +++ b/libavcodec/dfa.c @@ -250,7 +250,7 @@ static int decode_wdlt(GetByteContext *gb, uint8_t *frame, int width, int height segments = bytestream2_get_le16u(gb); while ((segments & 0xC000) == 0xC000) { unsigned skip_lines = -(int16_t)segments; - unsigned delta = -((int16_t)segments * width); + int64_t delta = -((int16_t)segments * (int64_t)width); if (frame_end - frame <= delta || y + lines + skip_lines > height) return AVERROR_INVALIDDATA; frame += delta; |