CVE-2026-43383

CVE-2026-43383 affects the Linux kernel’s TCP MD5 signature handling. The root cause is a non-constant-time MAC comparison, enabling potential timing attacks. The vulnerability is addressed by changing the MAC comparison to a constant-time implementation using the appropriate helper function. The...

SUSE CVE-2026-43194

In the Linux kernel, the following vulnerability has been resolved: net: consume xmit errors of GSO frames udpgrofrglist.sh and udpgrobench.sh are the flakiest tests currently in NIPA. They fail in the same exact way, TCP GRO test stalls occasionally and the test gets killed after 10min. These...

CVE-2026-43198

A flaw was found in the Linux kernel. A race condition exists in the TCP Transmission Control Protocol IPv6 Internet Protocol version 6 socket handling, specifically within the tcpv6synrecvsock function. This occurs because a child socket becomes visible in the TCP hash table before its...

CVE-2026-43194

A flaw was found in the Linux kernel's networking subsystem. Specifically, the kernel incorrectly processes transmit errors for Generic Segmentation Offload GSO frames. When a single segment within a GSO frame is lost, the system may misinterpret this as a complete loss of the entire frame. This...

CVE-2026-43254

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - fix packet extraction from stream When processing TCP stream data in ovpntcprecv, we receive large cloned skbs from strprcv that may contain multiple coalesced packets. The current implementation has two bugs: 1. Head...

CVE-2026-43254 ovpn: tcp - fix packet extraction from stream

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - fix packet extraction from stream When processing TCP stream data in ovpntcprecv, we receive large cloned skbs from strprcv that may contain multiple coalesced packets. The current implementation has two bugs: 1. Head...

PT-2026-37555

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the CIFS component where cifs tcp ses lock was used to protect various objects, including tcon fields, instead of using more granular locks. This caused unnecessary...

[SECURITY] Fedora 42 Update: openvpn-2.6.20-1.fc42

OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single UDP or TCP port. It can use the Marcus Franz Xaver Johannes Oberhumers LZO library for...

CVE-2026-43036

In the Linux kernel, the following vulnerability has been resolved: net: use skbheaderpointer for TCPv4 GSO fragoff check Syzbot reported a KMSAN uninit-value warning in gsofeaturescheck called from netifskbfeatures 1. gsofeaturescheck reads iph-fragoff to decide whether to clear mangleidfeatures...

[SECURITY] Fedora 44 Update: coturn-4.10.0-1.fc44

The Coturn TURN Server is a VoIP media traffic NAT traversal server and gatew ay. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying...

CVE-2026-40879

A flaw was found in Nest, a framework for building scalable Node.js server-side applications. A remote attacker can exploit this vulnerability by sending numerous small, valid JSON JavaScript Object Notation messages within a single TCP Transmission Control Protocol frame. This action causes the...

CVE-2026-31495

A flaw was found in the Linux kernel's netfilter connection tracking ctnetlink component. This vulnerability, related to improper input validation, allows an attacker to provide malformed netlink policy attributes. Specifically, invalid values for TCP window scaling WSCALE could lead to undefined...

EUVD-2026-24935

A client might theoretically be able to cause a mismatch between queries sent to a backend and the received responses by sending a flood of perfectly timed queries that are routed to a TCP-only or DNS over TLS backend...

EUVD-2026-24867

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: use netlink policy range checks Replace manual range and mask validations with netlink policy annotations in ctnetlink code paths, so that the netlink core rejects invalid values early and can generate extac...

CVE-2026-33596 TCP backend stream ID overflow

A client might theoretically be able to cause a mismatch between queries sent to a backend and the received responses by sending a flood of perfectly timed queries that are routed to a TCP-only or DNS over TLS backend...

CVE-2026-33596 TCP backend stream ID overflow

A client might theoretically be able to cause a mismatch between queries sent to a backend and the received responses by sending a flood of perfectly timed queries that are routed to a TCP-only or DNS over TLS backend...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013746)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013746 advisory. In the Linux kernel, the following vulnerability has been resolved: net/smc: Forward wakeup to smc socket waitqueue after fallback When we replace TCP with SMC and a...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013582)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013582 advisory. In the Linux kernel, the following vulnerability has been resolved: net: stream: purge skerrorqueue in skstreamkillqueues Changheon Lee reported TCP socket leaks, wi...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010727)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010727 advisory. The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 Double-Hash...

Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport)

Impact Attacker sends many small, valid JSON messages in one TCP frame → handleData recurses once per message; buffer shrinks each call → maxBufferSize is never reached; call stack overflows instead → A 47 KB payload is sufficient to trigger RangeError Patches Fixed in @nestjs/[email protected]....