Commit 5f2b4aef27 for qemu.org

commit 5f2b4aef27292f37ea19af527dbb5a14aa232777
Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Date:   Mon Apr 27 14:47:51 2026 +0400

    net/filter: free old values in property setters

    netfilter_set_position and netfilter_set_netdev_id overwrote their
    respective fields with g_strdup without freeing the previous value,
    leaking memory on each property write.

    Fixes: fdccce459621 ("init/cleanup of netfilter object")
    Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
    Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

diff --git a/net/filter.c b/net/filter.c
index c7cc6615dc..389f3b0bfe 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -130,6 +130,7 @@ static void netfilter_set_netdev_id(Object *obj, const char *str, Error **errp)
 {
     NetFilterState *nf = NETFILTER(obj);

+    g_free(nf->netdev_id);
     nf->netdev_id = g_strdup(str);
 }

@@ -182,6 +183,7 @@ static void netfilter_set_position(Object *obj, const char *str, Error **errp)
 {
     NetFilterState *nf = NETFILTER(obj);

+    g_free(nf->position);
     nf->position = g_strdup(str);
 }