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avformat/rpl: Fix check for negative values

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Fixes: signed integer overflow: 10 * -1923267925333400000 cannot be represented in type 'int64_t' (aka 'long')
Fixes: 378891963/clusterfuzz-testcase-minimized-fuzzer_loadfile_direct-5714338935013376
Found-by: ossfuzz
Reported-by: Kacper Michajlow <kasper93@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-11-18 04:09:11 +01:00
parent 1446e37d3d
commit eab65379bf
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GPG Key ID: B18E8928B3948D64
1 changed files with 1 additions and 1 deletions
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libavformat/rpl.c
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@ -102,7 +102,7 @@ static AVRational read_fps(const char* line, int* error)
line++;
for (; *line>='0' && *line<='9'; line++) {
// Truncate any numerator too large to fit into an int64_t
if (num > (INT64_MAX - 9) / 10 || den > INT64_MAX / 10)
if (num > (INT64_MAX - 9) / 10ULL || den > INT64_MAX / 10ULL)
break;
num = 10 * num + (*line - '0');
den *= 10;