UBUNTU-CVE-2026-23209

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlancommonnewlink valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip lin...

CVE-2026-23209 macvlan: fix error recovery in macvlan_common_newlink()

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlancommonnewlink valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip lin...

EUVD-2026-5839

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlancommonnewlink valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip lin...

CVE-2026-23209

CVE-2026-23209 is a Linux kernel macvlan bug. The issue occurs in macvlan when creating a new link with MACVLAN_MODE_SOURCE and MACVLAN_MACADDR_ADD/SET and the lower device already has a macvlan port, causing a use-after-free after a failed register_netdevice() in the create path. Upstream kernel...

SUSE CVE-2026-23001

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlanforwardsource Add RCU protection on struct macvlansourceentry-vlan. Whenever macvlanhashdelsource is called, we must clear entry-vlan pointer before RCU grace period starts. This allows...