Commit-ID: 56921becdd1eb0720603fc2e6e4c7f518196d917 Gitweb: http://git.kernel.org/tip/56921becdd1eb0720603fc2e6e4c7f518196d917 Author: Adrian Hunter <[email protected]> AuthorDate: Tue, 22 Oct 2013 10:34:17 +0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Wed, 23 Oct 2013 10:59:09 -0300
perf tools: Do not accept parse_tag_value() overflow 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 <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
