CVE-2026-80850

A flaw was found in the Linux kernel's TCP Authentication Option TCP-AO implementation. An unprivileged local attacker could exploit a race condition when a network device is detached from its Virtual Routing and Forwarding VRF interface. This could lead to a use-after-free vulnerability, causing...

CVE-2026-80849

A flaw was found in the Linux kernel's TCP Authentication Option TCP-AO implementation. When a network connection using TCP-AO is re-established with a different server, a timing issue can cause the system to attempt to use memory that has already been released. This 'use-after-free' vulnerabilit...

Linux kernel TCP AO Function Heap Buffer Overflow DoS

The vulnerability in the tcpaodeletekey function within the net/ipv4/tcpao.c file of the Linux kernel’s IPv4 implementation is related to dereferencing a pointer with an expired lifetime. Exploitation of this vulnerability may allow an attacker to compromise the confidentiality, integrity, and...

SUSE CVE-2026-80849

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

SUSE CVE-2026-80850

In the Linux kernel, the following vulnerability has been resolved: tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured, tcpconnect first verifies that a key matches the peer and the bound device's...

CVE-2026-80849

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

CVE-2026-80850

In the Linux kernel, the following vulnerability has been resolved: tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured, tcpconnect first verifies that a key matches the peer and the bound device's...

CVE-2026-80850 tcp: fix AO info use-after-free in tcp_ao_connect_init()

In the Linux kernel, the following vulnerability has been resolved: tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured, tcpconnect first verifies that a key matches the peer and the bound device's...

CVE-2026-80850 tcp: fix AO info use-after-free in tcp_ao_connect_init()

In the Linux kernel, the following vulnerability has been resolved: tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured, tcpconnect first verifies that a key matches the peer and the bound device's...

CVE-2026-80850

CVE-2026-80850 is a use-after-free in the Linux kernel's TCP-AO implementation. During tcp_v4_connect(), a race exists between initial key validation and the later L3-master resolution in tcp_ao_connect_init(). If the bound network device is detached from its VRF in that window, the only AO key i...

EUVD-2026-71300

In the Linux kernel, the following vulnerability has been resolved: tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured, tcpconnect first verifies that a key matches the peer and the bound device's...

CVE-2026-80849 net/tcp-ao: fix use-after-free of current_key on reconnect to another peer

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

EUVD-2026-71299

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

CVE-2026-80849

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

CVE-2026-80849 net/tcp-ao: fix use-after-free of current_key on reconnect to another peer

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...

CVE-2026-80849

This vulnerability affects the Linux kernel's TCP Address Obfuscation (TCP-AO) subsystem. The root cause is a use-after-free of current_key triggered when a socket is disconnected and connect() is called for a different peer. Because tcp_inbound_ao_hash() runs with only rcu_read_lock() held, a so...

Linux Distros Unpatched Vulnerability : CVE-2026-80850

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: fix AO info use-after-free in tcpaoconnectinit tcpv4connect adds a SYN-SENT socket to the ehash before calling tcpconnect. If TCP-AO is configured,...

Linux Distros Unpatched Vulnerability : CVE-2026-80849

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock hel...

PT-2026-85728

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the TCP Authentication Option TCP-AO implementation. A race condition occurs when a device is detached from its Virtual Routing and Forwarding VRF...

CVE-2026-80849: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of currentkey on reconnect to another peer tcpinboundaohash is called before bhlocksocknested is taken, with only rcureadlock held. On the fast path for established sockets, if the rnextkeyid sent b...