Commit-ID: 56921becdd1eb0720603fc2e6e4c7f518196d917 Gitweb: http://git.kernel.org/tip/56921becdd1eb0720603fc2e6e4c7f518196d917 Author: Adrian Hunter <adrian.hunter@xxxxxxxxx> AuthorDate: Tue, 22 Oct 2013 10:34:17 +0300 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> 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 <adrian.hunter@xxxxxxxxx> Cc: David Ahern <dsahern@xxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Link: http://lkml.kernel.org/r/1382427258-17495-14-git-send-email-adrian.hunter@xxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- 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-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html