[FFmpeg-cvslog] avformat/jacosubdec: Use 64bit for abs
Michael Niedermayer
git at videolan.org
Wed Mar 27 00:33:38 EET 2024
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Tue Mar 26 00:21:28 2024 +0100| [746203af3116288b1dd4442e46a5724ba759e831] | committer: Michael Niedermayer
avformat/jacosubdec: Use 64bit for abs
Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_JACOSUB_fuzzer-5401294942371840
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=746203af3116288b1dd4442e46a5724ba759e831
---
libavformat/jacosubdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/jacosubdec.c b/libavformat/jacosubdec.c
index 3a42c4b03e..da150a96ab 100644
--- a/libavformat/jacosubdec.c
+++ b/libavformat/jacosubdec.c
@@ -150,7 +150,7 @@ static int get_shift(unsigned timeres, const char *buf)
}
ret = (int64_t)h*3600 + (int64_t)m*60 + s;
- if (FFABS(ret) > (INT64_MAX - FFABS(d)) / timeres)
+ if (FFABS(ret) > (INT64_MAX - FFABS((int64_t)d)) / timeres)
return 0;
ret = sign * (ret * timeres + d);
More information about the ffmpeg-cvslog
mailing list