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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:55:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-11-03 23:29:51 +0100 |
| commit | b8d29eab19f8a8bd82ec96f88dcef13a87b3d024 (patch) | |
| tree | 3c18a317043fba42a513880fbd64a26535f7ed16 | |
| parent | 622893afe30bdd81bbe62f505fbef6a05a5e6d57 (diff) | |
| download | ffmpeg-b8d29eab19f8a8bd82ec96f88dcef13a87b3d024.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 68ed7511d7..a4b6c0fe40 100644 --- a/libavformat/jacosubdec.c +++ b/libavformat/jacosubdec.c @@ -145,7 +145,7 @@ 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); |