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Diffstat (limited to 'src/libsystemd-network/sd-dhcp6-client.c')
-rw-r--r--src/libsystemd-network/sd-dhcp6-client.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 05972e01c9..7dead24836 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -898,7 +898,12 @@ static int client_receive_advertise(sd_dhcp6_client *client, DHCP6Message *adver
return r;
}
-static int client_receive_message(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+static int client_receive_message(
+ sd_event_source *s,
+ int fd, uint32_t
+ revents,
+ void *userdata) {
+
sd_dhcp6_client *client = userdata;
DHCP6_CLIENT_DONT_DESTROY(client);
_cleanup_free_ DHCP6Message *message = NULL;
@@ -924,8 +929,11 @@ static int client_receive_message(sd_event_source *s, int fd, uint32_t revents,
return log_dhcp6_client_errno(client, errno, "Could not receive message from UDP socket: %m");
- } else if ((size_t)len < sizeof(DHCP6Message))
+ }
+ if ((size_t) len < sizeof(DHCP6Message)) {
+ log_dhcp6_client(client, "Too small to be DHCP6 message: ignoring");
return 0;
+ }
switch(message->type) {
case DHCP6_SOLICIT: