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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:55:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-24 17:57:37 +0200 |
| commit | b1a68127bbcd3d638363fa0249982c494e87c9e2 (patch) | |
| tree | 3ffdaef335097bcb7ea61824a0d3587aabdc6e8a /libavformat/jacosubdec.c | |
| parent | 0345a885455dea52fcc570b97f5dc5c75372a39c (diff) | |
| download | ffmpeg-b1a68127bbcd3d638363fa0249982c494e87c9e2.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>
Diffstat (limited to 'libavformat/jacosubdec.c')
| -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 0ee4820f62..61b1316dc9 100644 --- a/libavformat/jacosubdec.c +++ b/libavformat/jacosubdec.c @@ -144,7 +144,7 @@ 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); |