From 80498fab01342243707a482f9b42c38a7c564026 Mon Sep 17 00:00:00 2001 From: Erik Karlsson Date: Mon, 29 Apr 2024 20:44:13 +0200 Subject: [PATCH] Update DNS records after pruning DHCP leases Not doing so can result in a use after free since the name for DHCP derived DNS records is represented as a pointer into the DHCP lease table. Update will only happen when necessary since lease_update_dns tests internally on dns_dirty and the force argument is zero. Signed-off-by: Erik Karlsson Reference:https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=80498fab01342243707a482f9b42c38a7c564026 Conflict:NA --- src/dnsmasq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/dnsmasq.c b/src/dnsmasq.c index c14240e..48e402f 100644 --- a/src/dnsmasq.c +++ b/src/dnsmasq.c @@ -1517,6 +1517,7 @@ static void async_event(int pipe, time_t now) { lease_prune(NULL, now); lease_update_file(now); + lease_update_dns(0); } #ifdef HAVE_DHCP6 else if (daemon->doing_ra) -- 2.33.0