Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ethtool: Do not perform operations on net devices that are not yet registered. There is a short period between when a net device starts to be unregistered and when it is actually gone. During that time frame, ethtool operations c...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mpls: Use rcudereferencertnl in mplsrouteinputrcu. As reported by syzbot 0, mplsrouteinputrcu can be called from mplsgetroute, which is under RTNL. net-mpls.platformlabel is only updated under RTNL. Let’s use rcudereferencertnl i...

CVE-2026-74726

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: re-check primaryispromisc under RTNL in bondalbmonitor bondalbmonitor reads primaryispromisc under RCU, then drops RCU and takes RTNL via rtnltrylock before undoing the promiscuity it set on the active slave. In tha...

UBUNTU-CVE-2026-74726

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: re-check primaryispromisc under RTNL in bondalbmonitor bondalbmonitor reads primaryispromisc under RCU, then drops RCU and takes RTNL via rtnltrylock before undoing the promiscuity it set on the active slave. In tha...

CVE-2026-74656

In the Linux kernel, the following vulnerability has been resolved: ipv4: fix use-after-free in fibnhcupdatemtu fibnhcupdatemtu walks the nexthop exception table under RTNL, but RTNL does not serialize this walk with PMTU exception updates. The walk uses rcudereferenceprotected with a constant tr...

UBUNTU-CVE-2026-74615

In the Linux kernel, the following vulnerability has been resolved: vxlan: do not arm the ageing timer on a device that is down vxlanchangelink arms vxlan-agetimer whenever the requested ageing interval differs from the configured one: if conf.ageinterval != vxlan-cfg.ageinterval...

CVE-2026-74726 bonding: alb: re-check primary_is_promisc under RTNL in bond_alb_monitor

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: re-check primaryispromisc under RTNL in bondalbmonitor bondalbmonitor reads primaryispromisc under RCU, then drops RCU and takes RTNL via rtnltrylock before undoing the promiscuity it set on the active slave. In tha...

PT-2026-79705

In the Linux kernel, the following vulnerability has been resolved: net/sched: cls api: Always acquire rtnl lock when destroying locked classifiers Another challenge with unlocked filters. There is a short window in tc new tfilter where a tcf proto can be found and briefly referenced by a totally...

SUSE CVE-2026-74543

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

UBUNTU-CVE-2026-74561

In the Linux kernel, the following vulnerability has been resolved: nexthop: avoid unlocked f6ilist walk in nhrtcacheflush nhrtcacheflush walks nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock, racing the unlocked IPv6 route add/delete that mutate the list under nh-loc...

UBUNTU-CVE-2026-74562

In the Linux kernel, the following vulnerability has been resolved: nexthop: take nh-lock for f6ilist walks in replace check and notify fib6checknhlist and nexthopreplacenotify walk nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock. IPv6 RTMNEWROUTE/RTMDELROUTE run...

CVE-2026-74543

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

AZL-96258 CVE-2026-74543 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74562 nexthop: take nh->lock for f6i_list walks in replace check and notify

In the Linux kernel, the following vulnerability has been resolved: nexthop: take nh-lock for f6ilist walks in replace check and notify fib6checknhlist and nexthopreplacenotify walk nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock. IPv6 RTMNEWROUTE/RTMDELROUTE run...

CVE-2026-74543 net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74543 net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74543

CVE-2026-74543 concerns the Linux kernel UDP tunnel NIC offload code. The issue: when device registration fails, the code may leak a struct udp_tunnel_nic due to an early return if utn->work_pending is set, because no subsequent NETDEV_UNREGISTER rebroadcast occurs. The fix, as described in co...

EUVD-2026-59736

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-72338

In the Linux kernel, the following vulnerability has been resolved: net/sched: actpedit: fix TOCTOU heap OOB write in tc offload There is a TOCTOU race condition in flower lockless approach between sizing a flowrule buffer and filling it. [email protected] reports: The clsflower...

CVE-2026-72054 net: ip_vti: require CAP_NET_ADMIN in the device netns for changelink

In the Linux kernel, the following vulnerability has been resolved: net: ipvti: require CAPNETADMIN in the device netns for changelink vtichangelink operates on at most two netns, devnetdev and the tunnel link netns t-net. They differ once the device is created in or moved to a netns other than t...