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