parse_tag_value() accepts an "unsigned long" and
multiplies it according to a tag character. Do
not accept the value if the multiplication
overflows.
Signed-off-by: Adrian Hunter <adrian.hun...@intel.com>
---
tools/perf/util/util.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index c25e57b..28a0a89 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -386,6 +386,8 @@ unsigned long parse_tag_value(const char *str, struct
parse_tag *tags)
if (s != endptr)
break;
+ if (value > ULONG_MAX / i->mult)
+ break;
value *= i->mult;
return value;
}
--
1.7.11.7
--
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