CVE-2026-63918 l2tp: use refcount_inc_not_zero in l2tp_session_get_by_ifname

In the Linux kernel, the following vulnerability has been resolved: l2tp: use refcountincnotzero in l2tpsessiongetbyifname A reader in l2tpsessiongetbyifname can return a pointer to a session whose refcount has reached zero. The getter takes its reference with plain refcountinc, but every other...

EUVD-2026-42713

A Return of Pointer Value Outside of Expected Range vulnerability in the fileio library of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privilged attacker to cause a Denial-of-Service DoS. On EX Series, QFX Series and MX Series a low-privileged attacker issuing a specific...

PYSEC-2026-856 OpenStack Neutron Improper Input Validation vulnerability

OpenStack Neutron before 2014.2.4 juno and 2015.1.x before 2015.1.1 kilo, when using the IPTables firewall driver, allows remote authenticated users to cause a denial of service L2 agent crash by adding an address pair that is rejected by the ipset tool...

OpenStack Neutron Improper Input Validation vulnerability

OpenStack Neutron before 2014.2.4 juno and 2015.1.x before 2015.1.1 kilo, when using the IPTables firewall driver, allows remote authenticated users to cause a denial of service L2 agent crash by adding an address pair that is rejected by the ipset tool...

CVE-2026-10654 RFCOMM session-disconnect race leaks session/L2CAP and denies further RFCOMM service in Zephyr Bluetooth Classic

A race condition in the Zephyr Bluetooth Classic RFCOMM host stack subsys/bluetooth/host/classic/rfcomm.c mishandles a simultaneous bidirectional session disconnect. When the local device has initiated a session teardown state BTRFCOMMSTATEDISCONNECTING, DISC sent, RTX timer armed and the connect...

CVE-2026-13563

A vulnerability has been found in Edimax EW-7478APC 1.04. This impacts the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. Such manipulation of the argument L2TPUserName leads to stack-based buffer overflow. It is possible to launch the attack...

SUSE CVE-2026-53262

In the Linux kernel, the following vulnerability has been resolved: l2tp: pppol2tp: hold reference to session in pppol2tpioctl pppol2tpioctl read sock-sk-skuserdata directly without any locks or reference counting. If a controllable sleep was induced during copyfromuser e.g. via a userfaultfd pag...

CVE-2026-53262

CVE-2026-53262 affects the Linux kernel ioctl path for the pppol2tp module (l2tp) where pppol2tp_ioctl() dereferenced sock->sk->sk_user_data without proper locking while a sleep could occur during copy_from_user(). If a concurrent socket close happened, l2tp_session_close() could free the s...

CVE-2026-53262 l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl()

In the Linux kernel, the following vulnerability has been resolved: l2tp: pppol2tp: hold reference to session in pppol2tpioctl pppol2tpioctl read sock-sk-skuserdata directly without any locks or reference counting. If a controllable sleep was induced during copyfromuser e.g. via a userfaultfd pag...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: l2tp: Fixed a memory leak in l2tpudpencaprecv. syzbot reported a memory leak in struct l2tpsession, l2tptunnel, sock, etc. 0 The referenced commit moved the validation of the protocol version in l2tpudpencaprecv. The new...

Allocation of Resources Without Limits or Throttling

Overview zeroconf is a Pure Python Multicast DNS Service Discovery Library Bonjour/Avahi compatible Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the DNSCache.asyncadd. Any unauthenticated host on the local link can exhaust system...

CVE-2026-46153

A flaw was found in the Linux kernel's 8021q VLAN module. This vulnerability occurs because cleared egress Quality of Service QoS mappings are not properly deleted, leading to an accumulation of mapping nodes. An attacker could repeatedly set and clear egress priority mappings, causing a memory...

CVE-2026-45987

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2 After VMRUN in guest mode, nestedsynccontrolfromvmcb02 syncs fields written by the CPU from vmcb02 to the cached vmcb12. This is because the cached vmcb12 is use...

PT-2026-61235

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the l2tp session get by ifname function. A reader matching session-ifname can be preempted between the strcmp and refcount inc operations. If the last referenc...

PT-2026-61436

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An unprivileged local user can cause a host CPU to pin indefinitely. This occurs when L2TP CMD SESSION GET is issued on L2TP ATTR IFNAME concurrently with L2TP CMD SESSION CREATE and L2T...

CVE-2026-8775 Edimax BR-6428NS POST Request formL2TPSetup buffer overflow

A flaw has been found in Edimax BR-6428NS 1.10. This affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. This manipulation of the argument L2TPUserName causes buffer overflow. It is possible to initiate the attack remotely. The exploit has...

SUSE CVE-2026-43080

In the Linux kernel, the following vulnerability has been resolved: l2tp: Drop large packets with UDP encap syzbot reported a WARN on my patch series 1. The actual issue is an overflow of 16-bit UDP length field, and it exists in the upstream code. My series added a debug WARN with an overflow...

CVE-2026-43080

A flaw was found in the Linux kernel's L2TP Layer 2 Tunneling Protocol subsystem. This vulnerability allows a remote attacker to send an oversized PPPoL2TP packet with UDP encapsulation. Due to an overflow in the 16-bit UDP length field, the packet's length is incorrectly truncated, which can lea...

EUVD-2026-27571

In the Linux kernel, the following vulnerability has been resolved: l2tp: Drop large packets with UDP encap syzbot reported a WARN on my patch series 1. The actual issue is an overflow of 16-bit UDP length field, and it exists in the upstream code. My series added a debug WARN with an overflow...

CVE-2026-43080

In the Linux kernel, the following vulnerability has been resolved: l2tp: Drop large packets with UDP encap syzbot reported a WARN on my patch series 1. The actual issue is an overflow of 16-bit UDP length field, and it exists in the upstream code. My series added a debug WARN with an overflow...