EUVD-2026-93204

In the Linux kernel, the following vulnerability has been resolved: net: lock the socket in sockgettstamp sk-skflags must only be changed while holding the socket lock, because socksetflag and sockresetflag use non atomic operations setbit and clearbit. sockgettstamp is one of the last places whe...

CVE-2023-40296

CVE-2023-40296 async-sockets-cpp hasta la versión 0.3.1 contiene una vulnerabilidad de desbordamiento de búfer por uno off-by-one en static void ReceiveFromUDPSocket udpSocket en udpsocket.hpp, alrededor de las líneas 160-167. El desbordamiento de búfer afecta a todos los servidores UDP...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

In the Linux kernel, the following vulnerabilities have been resolved: TCP/UDP: Fixed memory leaks related to sk and zerocopy SKBS with TX timestamps. Syzkaller reported 0 memory leaks of an UDP socket and ZEROCOPY SKBS. We can reproduce this issue with the following sequence: sk = socketAFINET,...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053420)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053420 advisory. In the Linux kernel, the following vulnerability has been resolved: inetdiag: fix kernel-infoleak for UDP sockets KMSAN reported a kernel-infoleak 1, that can...

SUSE CVE-2026-68386

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Reject unhashed UDP sockets on sockmap update UDP sockets get SOCKRCUFREE set when auto-bound. This means skisrefcountedunbound = true, while skisrefcountedbound = false. Because sockmap accepts unbound UDP sockets,...

CVE-2026-73214

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, dtlsserverinputhandler and createnewconnectedudpsocket in src/apps/relay/dtlslistener.c retain OpenSSL dtls1reassemblefragment state for a 35-byte fragmented ClientHello declaring a 650,000-byte handshake before...

CVE-2026-68386

A flaw was found in the Linux kernel. A local attacker with BPF program capabilities could exploit a vulnerability in the BPF sockmap feature. This occurs when a BPF program increments the reference count of an unbound UDP socket, and the socket is subsequently bound. This sequence of events caus...

bpf, sockmap: Reject unhashed UDP sockets on sockmap update

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PT-2026-70829

Name of the Vulnerable Software and Affected Versions Coturn versions prior to 4.16.0 Description The dtls server input handler and create new connected udp socket functions in src/apps/relay/dtls listener.c retain the state of the OpenSSL dtls1 reassemble fragment function when processing a...

CVE-2026-68342 ovpn: avoid putting unrelated P2P peer on socket release

In the Linux kernel, the following vulnerability has been resolved: ovpn: avoid putting unrelated P2P peer on socket release ovpnpeerreleasep2p is called when an OVPN UDP socket is being destroyed. It checks the currently published P2P peer and releases it only if that peer still uses the socket...

PT-2026-69786

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF sockmap component where unbound UDP sockets are accepted during sockmap updates. Because UDP sockets have their SOCK RCU FREE status changed when they are boun...

UBUNTU-CVE-2026-64581

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix skdstcache double-free in xfrmuserpolicy xfrmuserpolicy clears the socket dst cache with skdstreset, i.e. the non-atomic skdstsetsk, NULL: it reads skdstcache with rcudereferenceprotected, stores NULL and dstreleases th...

PT-2026-68082

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A double-free issue exists in the xfrm user policy function. The function uses sk dst reset, which is non-atomic, to clear the socket destination cache. In a race condition involving a...

CVE-2026-10655: Use After Free

The asynchronous SNTP client in Zephyr subsys/net/lib/sntp/sntp.c, sntpcloseasync closed the UDP socket file descriptor directly from the calling thread immediately after detaching it from the network socket service, without synchronizing with the socket-service poll thread. The socket service...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: pfcp: The device is destroyed along with the udp socket’s netns structure. The pfcpnewlink function links the device to a specific netns in devnet instead of net, where an udp tunnel socket is created. Even when net is removed, t...

Out-of-bounds Write

Overview Affected versions of this package are vulnerable to Out-of-bounds Write through asyncio.AbstractEventLoop.sockrecvfrominto in the Windows ProactorEventLoop datagram receive path. An attacker can trigger a ValueError-free out-of-bounds receive by supplying an nbytes value larger than the...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011071)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011071 advisory. In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp...

CVE-2026-23439

In the Linux kernel, the following vulnerability has been resolved: udptunnel: fix NULL deref caused by udpsockcreate6 when CONFIGIPV6=n When CONFIGIPV6 is disabled, the udpsockcreate6 function returns 0 success without actually creating a socket. Callers such as foucreate then proceed to...

UBUNTU-CVE-2026-23439

In the Linux kernel, the following vulnerability has been resolved: udptunnel: fix NULL deref caused by udpsockcreate6 when CONFIGIPV6=n When CONFIGIPV6 is disabled, the udpsockcreate6 function returns 0 success without actually creating a socket. Callers such as foucreate then proceed to...

CVE-2026-23439 udp_tunnel: fix NULL deref caused by udp_sock_create6 when CONFIG_IPV6=n

In the Linux kernel, the following vulnerability has been resolved: udptunnel: fix NULL deref caused by udpsockcreate6 when CONFIGIPV6=n When CONFIGIPV6 is disabled, the udpsockcreate6 function returns 0 success without actually creating a socket. Callers such as foucreate then proceed to...