EUVD-2026-71664

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...

CVE-2026-80905

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...

AZL-99528 CVE-2026-80842 affecting package kernel 6.6.150.1-1

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:...

EUVD-2026-71292

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-2026-80842

CVE-2026-80842 is a use-after-free in the Linux kernel bridge multicast subsystem, affecting master VLANs . When a master VLAN is deleted, br_multicast_toggle_one_vlan() returns early on the br_vlan_is_brentry() check without clearing BR_VLFLAG_MCAST_ENABLED under br->multicast_lock. The VLAN ...

CVE-2026-80842

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-2026-80842 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-2026-80906

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...

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...

vlan-hopping---frogger

Frogger - VLAN Hopping Simple VLAN enumeration and hopping script. Released as open source by NCC Group Plc - http://www.nccgroup.com/ Developed by Daniel Compton, daniel dot compton at nccgroup dot com https://github.com/nccgroup/vlan-hopping Released under AGPL see LICENSE for more information...

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...

EUVD-2026-68755

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

TOTOLINK T6 firmware version 4.1.5cu.748_B20211015 is affected by an incorrect access control flaw in the delVlanCfg function. An unauthenticated attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to remove VLAN entries from the device. The vulnerability is scored CVSS 9.1 (CRITICAL...

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-2026-80634

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: avoid numencaps underflow on bridge VLAN untag The DEVPATHBRVLANUNTAG case post-decrements info-numencaps inside WARNONONCE. numencaps is u8, so if it's already 0 the decrement still happens and wraps it to...

CVE-2026-80634

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: avoid numencaps underflow on bridge VLAN untag The DEVPATHBRVLANUNTAG case post-decrements info-numencaps inside WARNONONCE. numencaps is u8, so if it's already 0 the decrement still happens and wraps it to...