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-rw-r--r--ui/qt5/horizonwizard.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/ui/qt5/horizonwizard.cc b/ui/qt5/horizonwizard.cc
index d761db1..72ede4f 100644
--- a/ui/qt5/horizonwizard.cc
+++ b/ui/qt5/horizonwizard.cc
@@ -119,7 +119,7 @@ std::map<std::string, HorizonWizard::NetworkInterface> probe_ifaces(void) {
int my_sock = ::socket(AF_INET, SOCK_STREAM, 0);
if(my_sock != -1) {
memset(&request, 0, sizeof(request));
- memcpy(&request.ifr_name, cifname, strlen(cifname));
+ memcpy(&request.ifr_name, cifname, strnlen(cifname, IFNAMSIZ));
errno = 0;
if(ioctl(my_sock, SIOCGIFHWADDR, &request) != -1) {
char *buf;