CVE-2026-90051 tcp: reject non zerocopy devmem tx

In the Linux kernel, the following vulnerability has been resolved: tcp: reject non zerocopy devmem tx Devmem tcp tx doesn't work without zero-copy, however it's not currently enforced if NETIFFSG isn't present. In this case, tcpsendmsglocked will try the copy path and try to copy data from an...

EUVD-2026-81912

In the Linux kernel, the following vulnerability has been resolved: tcp: reject non zerocopy devmem tx Devmem tcp tx doesn't work without zero-copy, however it's not currently enforced if NETIFFSG isn't present. In this case, tcpsendmsglocked will try the copy path and try to copy data from an...

kernel: selinux: check connect-related permissions on TCP Fast Open

A flaw was found in the Linux kernel's Security-Enhanced Linux SELinux module. When using TCP Fast Open, SELinux failed to properly check connect-related permissions. This oversight could allow a local attacker to bypass SELinux network access controls, potentially enabling unauthorized network...

unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection

A flaw was found in Unbound. A malicious actor can exploit a vulnerability in the TCP/DoT reading procedure, which lacks a limit on consecutive reads. By continuously streaming distinct uncached names over a TCP/DoT connection, an attacker can monopolize a worker's event loop. This can lead to a...

PT-2026-94505

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the cgroup getsockopt BPF program where the ctx-optlen can be shrunk after the kernel getsockopt handler has executed. In the kernel-buffer variant used by TCP ZEROCOP...

CVE-2026-90054: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tcp: fix corruption of urgent data on multi-segment retransmit On the normal xmit path, while in urgent mode we refuse to build a multi-segment TSO packet, so every segment gets its own urgptr: / tcpwritexmit / limit = mssnow; if...

CVE-2026-90063: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: virtio-net: Ensure that TCP packets don't overflow gsosegs The user can specify any gsosize in a packet crafted with an AFPACKET PACKETVNETHDR socket, even smaller than TCPMINGSOSIZE = 8. At the same time, GSOMAXSIZE = 8 GSOMAXSE...

CVE-2026-54634: Out-of-bounds Write

Hamlib is a ham radio control library for radios, rotators, and amplifiers. Prior to 4.7.2, the unauthenticated rigctld sendraw command on TCP port 4532 reaches rigctlsendraw in tests/rigctlparse.c, which writes a NUL byte at bufbuflen + 1 outside its 200-byte stack buffer, and rigsendraw in...

PT-2026-94399

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the TCP implementation where devmem TX is not properly enforced to require zero-copy when NETIF F SG is absent. In such scenarios, the tcp sendmsg locked function...

PT-2026-95001

Name of the Vulnerable Software and Affected Versions SolarWinds Access Rights Manager versions prior to 2026.2.1.7 Description An unauthenticated remote code execution issue exists due to a hardcoded shared HMAC secret included in the installer that is identical across all deployments. The gRPC...

PT-2026-94402

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the TCP retransmit path where the system fails to restrict the creation of multi-segment packets while in urgent mode. Unlike the normal transmission path, the tcp...

CVE-2026-20154

A vulnerability in the system rate-limiting process for syslog message 419002 of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device...

CVE-2026-20248 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software TCP DNS Denial of Service Vulnerability

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...

CVE-2026-20248

CVE-2026-20248 affects the DNS over TCP implementation in Cisco Secure Firewall Adaptive Security Appliance (ASA) and Cisco Secure Firewall Threat Defense (FTD) Software. The root cause is a logic error in parsing DNS queries and tracking the size of incoming buffers. An unauthenticated, remote a...

CVE-2026-20248 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software TCP DNS Denial of Service Vulnerability

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...

EUVD-2026-81143

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...

EUVD-2026-81128

A vulnerability in the system rate-limiting process for syslog message 419002 of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device...

NPM: node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - Resource Exhaustion

Resource Exhaustion vulnerability discovered by ? in WordPress Npm node-opcua-transport versions = 2.0.0, 2.170.0...

EUVD-2026-80869

node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software TCP DNS Denial of Service Vulnerability

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...