From b230fdfa9da2f31e6cc90f90579c6d020c770f86 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sat, 9 Nov 2019 17:32:43 +0100 Subject: taskset: tighten the check for stride values function old new delta taskset_main 986 987 +1 Signed-off-by: Denys Vlasenko --- util-linux/taskset.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'util-linux') diff --git a/util-linux/taskset.c b/util-linux/taskset.c index df1bc0a4f..b542f8c83 100644 --- a/util-linux/taskset.c +++ b/util-linux/taskset.c @@ -149,8 +149,8 @@ static void parse_cpulist(ul *mask, unsigned max, char *s) if ((*s != ',' && *s != '\0') || bit > end || end == UINT_MAX /* bb_strtou returns this on malformed / ERANGE numbers */ - || stride == 0 - || stride == UINT_MAX + || (stride - 1) > (UINT_MAX / 4) + /* disallow 0, malformed input, and too large stride prone to overflows */ ) { bb_error_msg_and_die("bad affinity '%s'", aff); } -- cgit v1.2.3