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authorDenys Vlasenko <vda.linux@googlemail.com>2019-11-09 17:32:43 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2019-11-09 17:32:43 +0100
commitb230fdfa9da2f31e6cc90f90579c6d020c770f86 (patch)
tree33614c264bc528461c429f36980a8bca626107e6 /util-linux/taskset.c
parenta82fb1b9d8a046e01dbad33bb57d064815d60e5c (diff)
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taskset: tighten the check for stride values
function old new delta taskset_main 986 987 +1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'util-linux/taskset.c')
-rw-r--r--util-linux/taskset.c4
1 files changed, 2 insertions, 2 deletions
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)
149 if ((*s != ',' && *s != '\0') 149 if ((*s != ',' && *s != '\0')
150 || bit > end 150 || bit > end
151 || end == UINT_MAX /* bb_strtou returns this on malformed / ERANGE numbers */ 151 || end == UINT_MAX /* bb_strtou returns this on malformed / ERANGE numbers */
152 || stride == 0 152 || (stride - 1) > (UINT_MAX / 4)
153 || stride == UINT_MAX 153 /* disallow 0, malformed input, and too large stride prone to overflows */
154 ) { 154 ) {
155 bb_error_msg_and_die("bad affinity '%s'", aff); 155 bb_error_msg_and_die("bad affinity '%s'", aff);
156 } 156 }