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...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fixed 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...

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...

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 ...