CVE-2026-64007

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: refresh tcphdr after skbensurewritable synproxytstampadjust rewrites the TCP timestamp option in place and then patches the TCP checksum via inetprotocsumreplace4 on the caller-supplied tcphdr pointer. Both...

CVE-2026-63913 netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state using an RST packet with an...

CVE-2026-63867 mptcp: close TOCTOU race while computing rcv_wnd

In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcvwnd The MPTCP output path access locklessly the MPTCP-level ackseq in multiple times, using possibly different values for the dataack in the DSS option and to compute the announced rcv...

EUVD-2026-45552

In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcvwnd The MPTCP output path access locklessly the MPTCP-level ackseq in multiple times, using possibly different values for the dataack in the DSS option and to compute the announced rcv...

CVE-2026-63867 mptcp: close TOCTOU race while computing rcv_wnd

In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcvwnd The MPTCP output path access locklessly the MPTCP-level ackseq in multiple times, using possibly different values for the dataack in the DSS option and to compute the announced rcv...

CVE-2026-63867

CVE-2026-63867 : In the Linux kernel, a TOCTOU race in MPTCP was resolved in the rcv_wnd computation. The MPTCP output path locklessly accesses the MPTCP-level ack_seq multiple times, potentially using different data_ack values from the DSS option to compute the announced rcv_wnd for the same pac...

CVE-2026-53389

In the Linux kernel, the following vulnerability has been resolved: 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 synchronous path, assuming these pointers are always NULL on LISTEN...

CVE-2026-63828 apparmor: mediate the implicit connect of TCP fast open sendmsg

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

EUVD-2026-45494

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63828 apparmor: mediate the implicit connect of TCP fast open sendmsg

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-53389 net/tcp-ao: fix use-after-free of key in del_async path

In the Linux kernel, the following vulnerability has been resolved: 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 synchronous path, assuming these pointers are always NULL on LISTEN...

CVE-2026-53389

In the Linux kernel, the following vulnerability has been resolved: 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 synchronous path, assuming these pointers are always NULL on LISTEN...

CVE-2026-53389 net/tcp-ao: fix use-after-free of key in del_async path

In the Linux kernel, the following vulnerability has been resolved: 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 synchronous path, assuming these pointers are always NULL on LISTEN...

CVE-2026-53389

CVE-2026-53389 affects the Linux kernel net/tcp-ao use-after-free in the del_async path when deleting a key. The root cause is that del_async omits current_key and rnext_key validity checks that exist in the synchronous path. If a key is added with set_current=1/set_rnext=1 while the socket is in...

PT-2026-61362

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the ovpn tcp close function. The function loads the ovpn socket using rcu dereference sk user data under an RCU read lock, caches the peer pointer, and then...

PT-2026-61144

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in AppArmor where the sendmsg and sendto functions, when used with the MSG FASTOPEN flag, combine the actions of connect2 and write2 to open a connection during the SYN...

PT-2026-61094

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the tcp ao delete key function within the del async path. The system incorrectly assumes that current key and rnext key pointers are always NULL on LISTE...

PT-2026-61361

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the OpenVPN implementation where the ovpn nl peer new doit function error path calls ovpn peer release directly instead of using ovpn peer put. This bypasses the kref...

CVE-2026-54465 websocket-driver: Memory exhaustion in HTTP header parser

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, when websocket-driver is used to implement a WebSocket server on top of a TCP server using WebSocket::Driver.server or to complement a WebSocket client, a peer can make a single connection consume an unbounded...