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-2026-80850

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-2026-71299

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

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-2026-72139

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: defer md5siginfo kfree past RCU grace period in tcpconnect The md5+ao reconciliation in tcpconnect net/ipv4/tcpoutput.c has two symmetric branches: if...

UBUNTU-CVE-2026-72139

In the Linux kernel, the following vulnerability has been resolved: tcp: defer md5siginfo kfree past RCU grace period in tcpconnect The md5+ao reconciliation in tcpconnect net/ipv4/tcpoutput.c has two symmetric branches: if needsmd5 tcpaodestroysocksk, false; else if needsao tcpclearmd5listsk;...

CVE-2026-72139 tcp: defer md5sig_info kfree past RCU grace period in tcp_connect

In the Linux kernel, the following vulnerability has been resolved: tcp: defer md5siginfo kfree past RCU grace period in tcpconnect The md5+ao reconciliation in tcpconnect net/ipv4/tcpoutput.c has two symmetric branches: if needsmd5 tcpaodestroysocksk, false; else if needsao tcpclearmd5listsk;...

PT-2026-72327

In the Linux kernel, the following vulnerability has been resolved: tcp: defer md5sig info kfree past RCU grace period in tcp connect The md5+ao reconciliation in tcp connect net/ipv4/tcp output.c has two symmetric branches: if needs md5 tcp ao destroy socksk, false; else if needs ao tcp clear md...

Linux Distros Unpatched Vulnerability : CVE-2026-68119

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: initialize standalone TCP-AO response padding tcpv4sendack and tcpv6sendresponse construct standalone TCP responses with TCP-AO options. The option length...

CVE-2026-68119

A flaw was found in the Linux kernel's TCP Authentication Option TCP-AO implementation. When the kernel constructs standalone TCP responses with TCP-AO options, padding bytes in the TCP header may be left uninitialized. If the Message Authentication Code MAC length is not four-byte aligned, these...

UBUNTU-CVE-2026-68119

In the Linux kernel, the following vulnerability has been resolved: tcp: initialize standalone TCP-AO response padding tcpv4sendack and tcpv6sendresponse construct standalone TCP responses with TCP-AO options. The option length carries the actual MAC length, but the TCP header length includes the...

CVE-2026-68119

In the Linux kernel, the following vulnerability has been resolved: tcp: initialize standalone TCP-AO response padding tcpv4sendack and tcpv6sendresponse construct standalone TCP responses with TCP-AO options. The option length carries the actual MAC length, but the TCP header length includes the...

PT-2026-69519

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the construction of standalone TCP responses using TCP-AO TCP Authentication Option options. The functions tcp v4 send ack and tcp v6 send response create responses...

SUSE CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

UBUNTU-CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

CVE-2026-64459 tcp: restore RCU grace period in tcp_ao_destroy_sock

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

Linux Distros Unpatched Vulnerability : CVE-2026-53389

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 key in delasync path In tcpaodeletekey, the delasync path skips the currentkey and rnextkey validity checks present in the...