The vulnerability of the arp_reduce() and neigh_reduce() functions in the drivers/net/vxlan/vxlan_core.c module of the Linux kernel allows a hacker to cause a service failure.

The vulnerability of the arpreduce and neighreduce functions in the drivers/net/vxlan/vxlancore.c module of the Linux kernel is related to the assignment of a null pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...

CVE-2025-39850 vxlan: Fix NPD in {arp,neigh}_reduce() when using nexthop objects

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix NPD in arp,neighreduce when using nexthop objects When the "proxy" option is enabled on a VXLAN device, the device will suppress ARP requests and IPv6 Neighbor Solicitation messages if it is able to reply on behalf of...

CVE-2025-39850

CVE-2025-39850 affects the Linux kernel vxlan implementation. When the VXLAN device runs with the proxy option enabled, ARP/IPv6 Neighbor Solicitation can be spuriously suppressed if the remote host’s MAC is not behind the any remote. The root cause is dereferencing an FDB nexthop entry that may ...

CVE-2025-39850

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix NPD in arp,neighreduce when using nexthop objects When the "proxy" option is enabled on a VXLAN device, the device will suppress ARP requests and IPv6 Neighbor Solicitation messages if it is able to reply on behalf of...

CVE-2025-39850 vxlan: Fix NPD in {arp,neigh}_reduce() when using nexthop objects

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix NPD in arp,neighreduce when using nexthop objects When the "proxy" option is enabled on a VXLAN device, the device will suppress ARP requests and IPv6 Neighbor Solicitation messages if it is able to reply on behalf of...