kernel: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

A flaw was found in the Linux kernel's Virtual Extensible LAN VXLAN module. This vulnerability occurs because a cached IP header pointer is improperly reused after a Path Maximum Transmission Unit PMTU check. When the packet's head is modified during the PMTU check, the old cached IP header point...

CVE-2026-80838

CVE-2026-80838 affects the vxlan subsystem in the Linux kernel. The root cause is a race condition during a filtered bulk FDB flush: vxlan_fdb_dst_destroy() unlinks the last remote from a non-nexthop FDB entry before the parent entry is removed from the hash table. During this window, an RCU read...

CVE-2026-80838 vxlan: keep the last remote linked during FDB flush

In the Linux kernel, the following vulnerability has been resolved: vxlan: keep the last remote linked during FDB flush A non-nexthop FDB entry is expected to have at least one remote while it remains reachable through the FDB hash table. A filtered bulk flush violates this invariant when every...

CVE-2026-80838

In the Linux kernel, the following vulnerability has been resolved: vxlan: keep the last remote linked during FDB flush A non-nexthop FDB entry is expected to have at least one remote while it remains reachable through the FDB hash table. A filtered bulk flush violates this invariant when every...

EUVD-2026-71288

In the Linux kernel, the following vulnerability has been resolved: vxlan: keep the last remote linked during FDB flush A non-nexthop FDB entry is expected to have at least one remote while it remains reachable through the FDB hash table. A filtered bulk flush violates this invariant when every...

PT-2026-85716

In the Linux kernel, the following vulnerability has been resolved: vxlan: keep the last remote linked during FDB flush A non-nexthop FDB entry is expected to have at least one remote while it remains reachable through the FDB hash table. A filtered bulk flush violates this invariant when every...

Linux Distros Unpatched Vulnerability : CVE-2026-80838

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - vxlan: keep the last remote linked during FDB flush A non-nexthop FDB entry is expected to have at least one remote while it remains reachable through the FDB...

CVE-2026-80681

A flaw was found in the Linux kernel's vxlan component. A use-after-free vulnerability exists due to improper handling of the Ethernet header pointer after routeshortcircuit is called. When pskbmaypull reallocates the skb-head, the previously cached Ethernet header pointer becomes stale, leading ...

SUSE CVE-2026-80681

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

AZL-98114 CVE-2026-80681 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

CVE-2026-80681

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

UBUNTU-CVE-2026-80681

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

CVE-2026-80681

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

CVE-2026-80681

CVE-2026-80681 is a use-after-free vulnerability in the Linux kernel's VXLAN driver (vxlan_xmit). Before calling route_shortcircuit(), the ethernet header pointer is cached via eth_hdr(skb). Inside route_shortcircuit(), pskb_may_pull() may reallocate skb->head, leaving the cached pointer refer...

CVE-2026-80681

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

CVE-2026-80681 vxlan: re-fetch eth header after route_shortcircuit()

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

EUVD-2026-67557

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

CVE-2026-80681 vxlan: re-fetch eth header after route_shortcircuit()

In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit, pskbmaypull can be called, which may reallocate skb-head. In this case,...

Linux Distros Unpatched Vulnerability : CVE-2026-80681

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - vxlan: re-fetch eth header after routeshortcircuit Before routeshortcircuit, the eth header pointer is cached from ethhdrskb. Inside routeshortcircuit,...

The vulnerability of the route_shortcircuit() function in the drivers/net/vxlan/vxlan_core.c file of the Linux kernel network device driver allows a attacker to cause a service failure.

The vulnerability of the routeshortcircuit function in the drivers/net/vxlan/vxlancore.c file of the Linux kernel network device driver involves a pointer dereferencing issue. Exploiting this vulnerability could allow an attacker to cause a system failure...