Fixes: Assertion c > 0 failed at libavutil/mathematics.c:61
Fixes: use-of-uninitialized-value
Fixes:
42537627/clusterfuzz-testcase-minimized-fuzzer_protocol_memory-5939605805793280
Found-by: ossfuzz
Reported-by: Kacper Michajlow
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/mccdec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavformat/mccdec.c b/libavformat/mccdec.c
index 85bf93cd3b1..8c0ea09b6be 100644
--- a/libavformat/mccdec.c
+++ b/libavformat/mccdec.c
@@ -93,7 +93,7 @@ static int mcc_read_header(AVFormatContext *s)
{
MCCContext *mcc = s->priv_data;
AVStream *st = avformat_new_stream(s, NULL);
- AVRational rate;
+ AVRational rate = {0};
int64_t ts, pos;
uint8_t out[4096];
char line[4096];
@@ -139,7 +139,7 @@ static int mcc_read_header(AVFormatContext *s)
continue;
}
- if (av_sscanf(line, "%d:%d:%d:%d", &hh, &mm, &ss, &fs) != 4)
+ if (av_sscanf(line, "%d:%d:%d:%d", &hh, &mm, &ss, &fs) != 4 ||
rate.den <= 0)
continue;
ts = av_sat_add64(av_rescale(hh * 3600LL + mm * 60LL + ss, rate.num,
rate.den), fs);
--
2.47.0
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