Fix netlink_connector bit shift in netmask ipv6 (#696)

Shifting more than 31 bit was possible which may lead to undefined behaviour
COVESA · May 15, 2024 · 7bd8690 · 7bd8690
1 parent cf49723
commit 7bd8690
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/implementation/endpoints/src/netlink_connector.cpp b/implementation/endpoints/src/netlink_connector.cpp
@@ -425,7 +425,7 @@ bool netlink_connector::check_sd_multicast_route_match(struct rtmsg* _routemsg,
                     if (i > 95) {
                         netmask2[0] |= static_cast<std::uint32_t>(1 << (i-96));
                     } else if (i > 63) {
-                        netmask2[1] |= static_cast<std::uint32_t>(1 << (i-63));
+                        netmask2[1] |= static_cast<std::uint32_t>(1 << (i-64));
                     } else if (i > 31) {
                         netmask2[2] |= static_cast<std::uint32_t>(1 << (i-32));
                     } else {