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author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 23:55:24 +0300 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-24 23:58:21 +0300 |
commit | 740a71b58362e536f43b51ed3c66ae8339f2554d (patch) | |
tree | f9586bd05d43c8e064582ceb8c538c25be5c6898 | |
parent | 4038dfc1d13728f4c7cb6bc9eb44a03279aec7f4 (diff) |
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 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); |