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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:55:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-26 16:51:01 +0200 |
| commit | 71e8a575da653948336d1be9ce929b23b88538ed (patch) | |
| tree | d1c721a735bf960afc273337bbc2a52c0ef4d655 | |
| parent | 78ed283608071dfc7e5a4ff00d6eaaaf2c1d329b (diff) | |
| download | ffmpeg-71e8a575da653948336d1be9ce929b23b88538ed.tar.gz | |
avformat/jacosubdec: Fix overflow in get_shift()
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_JACOSUB_fuzzer-6722544461283328
Fixes: signed integer overflow: 48214448 * 60 cannot be represented in type 'int'
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 b1a68127bbcd3d638363fa0249982c494e87c9e2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/jacosubdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/jacosubdec.c b/libavformat/jacosubdec.c index a5364bdae7..02c93e8515 100644 --- a/libavformat/jacosubdec.c +++ b/libavformat/jacosubdec.c @@ -152,7 +152,7 @@ static int get_shift(int timeres, const char *buf) ret = 0; switch (n) { case 4: - ret = sign * (((int64_t)a*3600 + b*60 + c) * timeres + d); + ret = sign * (((int64_t)a*3600 + (int64_t)b*60 + c) * timeres + d); break; case 3: ret = sign * (( (int64_t)a*60 + b) * timeres + c); |