[openwrt/openwrt] hostapd: use strdup on string passed to hostapd_add_iface

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/80a36594f9623dc471c6d866d3e688da39c143be

commit 80a36594f9623dc471c6d866d3e688da39c143be
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Jun 14 14:17:57 2024 +0200

    hostapd: use strdup on string passed to hostapd_add_iface
    
    The data is modified within hostapd_add_iface
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
    (cherry picked from commit 032d3fcf7a861b140435b6507b2b0b66361c92f8)
    Link: https://github.com/openwrt/openwrt/pull/15898
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/network/services/hostapd/src/src/ap/ucode.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/package/network/services/hostapd/src/src/ap/ucode.c b/package/network/services/hostapd/src/src/ap/ucode.c
index af97091be5..80c01b4b9b 100644
--- a/package/network/services/hostapd/src/src/ap/ucode.c
+++ b/package/network/services/hostapd/src/src/ap/ucode.c
@@ -86,12 +86,16 @@ static uc_value_t *
 uc_hostapd_add_iface(uc_vm_t *vm, size_t nargs)
 {
 	uc_value_t *iface = uc_fn_arg(0);
+	char *data;
 	int ret;
 
 	if (ucv_type(iface) != UC_STRING)
 		return ucv_int64_new(-1);
 
-	ret = hostapd_add_iface(interfaces, ucv_string_get(iface));
+	data = strdup(ucv_string_get(iface));
+	ret = hostapd_add_iface(interfaces, data);
+	free(data);
+
 	hostapd_ucode_update_interfaces();
 
 	return ucv_int64_new(ret);