[FFmpeg-devel] [PATCH 3/7] avutil/parseutils: Check sign in av_parse_time()

[Michael Niedermayer]

Fixes: signed integer overflow: -9223372053736 * 1000000 cannot be represented in type 'long'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_CONCAT_fuzzer-6607924558430208

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavutil/parseutils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/parseutils.c b/libavutil/parseutils.c
index 167e822648..6161f4ac95 100644
--- a/libavutil/parseutils.c
+++ b/libavutil/parseutils.c
@@ -736,7 +736,7 @@ int av_parse_time(int64_t *timeval, const char *timestr, int duration)
     if (*q)
         return AVERROR(EINVAL);
 
-    if (INT64_MAX / suffix < t)
+    if (t < 0 || INT64_MAX / suffix < t)
         return AVERROR(ERANGE);
     t *= suffix;
     if (INT64_MAX - microseconds < t)
-- 
2.17.1