CVE-2026-80842 net: bridge: mcast: fix use-after-free of a master VLAN's multicast context

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context brmulticasttoggleonevlan clears BRVLFLAGMCASTENABLED under br-multicastlock before stopping a VLAN's multicast context. That is the teardown handshake:...

PT-2026-85720

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the bridge multicast component of the Linux kernel. The problem occurs during the teardown of a master VLAN's multicast context. Specifically, the br...

Linux Distros Unpatched Vulnerability : CVE-2026-80905

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is...

CVE-2026-80905: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is called first to advance networkheader past the VLAN tag to the inner...

PT-2026-91796

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transport header when sending VLAN-tagged frame In tap get user xdp, when processing a VLAN-tagged frame e.g. ETH P 8021Q, skb set network header is called first to advance network header past the VLAN tag to...

Linux Distros Unpatched Vulnerability : CVE-2026-80906

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: packet: fix wrong transportheader when sending VLAN-tagged frame In packetparseheaders, when processing a VLAN-tagged frame, skbsetnetworkheader is called ...

Linux Distros Unpatched Vulnerability : CVE-2026-80842

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: bridge: mcast: fix use-after-free of a master VLAN's multicast context brmulticasttoggleonevlan clears BRVLFLAGMCASTENABLED under br-multicastlock before...

PT-2026-86196

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the tap get user xdp function when processing VLAN-tagged frames. The skb set network header function is called prematurely, advancing the network header past the VLAN...

PT-2026-91791

In the Linux kernel, the following vulnerability has been resolved: net: packet: fix wrong transport header when sending VLAN-tagged frame In packet parse headers, when processing a VLAN-tagged frame, skb set network header is called to advance network header past the VLAN tag to the inner protoc...

PT-2026-86197

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists when processing VLAN-tagged frames where the transport header is incorrectly set. In the packet parse headers function, skb set network header is called to advance the...

CVE-2026-80906: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: packet: fix wrong transportheader when sending VLAN-tagged frame In packetparseheaders, when processing a VLAN-tagged frame, skbsetnetworkheader is called to advance networkheader past the VLAN tag to the inner protocol...

PT-2026-91329

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context br multicast toggle one vlan clears BR VLFLAG MCAST ENABLED under br-multicast lock before stopping a VLAN's multicast context. That is the teardown...

CVE-2026-80842: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context brmulticasttoggleonevlan clears BRVLFLAGMCASTENABLED under br-multicastlock before stopping a VLAN's multicast context. That is the teardown handshake:...

CVE-2026-80634

A flaw was found in the Linux kernel's netfilter flowtable component. An integer underflow can occur during bridge Virtual Local Area Network VLAN untagging operations. If the numencaps value is zero, a decrement operation can cause it to wrap to 255. This can lead to an out-of-bounds stack read...

kernel: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv Blamed commit did not take care of VLAN encapsulations as spotted by syzbot 1. Use skbvlaninetprepare instead of pskbinetmaypull. 1 BUG: KMSAN: uninit-value in INETECNdecapsulate...

CVE-2026-51731

Incorrect access control in the delVlanCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove VLAN entries via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

SUSE CVE-2026-72229

In the Linux kernel, the following vulnerability has been resolved: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadvmeshifvlan on top of it via the NETDEVREGISTER notifier. But in this process, another receiv...

CVE-2026-51731: Improper Access Control

Incorrect access control in the delVlanCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove VLAN entries via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51731

Incorrect access control in the delVlanCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove VLAN entries via sending a crafted POST request to /cgi-bin/cstecgi.cgi...

CVE-2026-51731

The TOTOLINK T6 wireless dual-band Mesh router (firmware version 4.1.5cu.748_B20211015 ) is vulnerable to an incorrect access control flaw in the delVlanCfg function. This vulnerability allows unauthenticated attackers to remove VLAN entries by sending a specially crafted POST request to the /cgi...