CVE-2026-72251 netfilter: nf_nat_sip: reload possible stale data pointer

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnatsip: reload possible stale data pointer quoting sashiko: ------------------------------------------------------------------------ .. noticed a potential memory bug and header corruption involving the SIP NAT helpe...

CVE-2026-72243 selinux: check connect-related permissions on TCP Fast Open

In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update...

CVE-2026-72243

CVE-2026-72243 affects the Linux kernel’s SELinux integration with TCP Fast Open. The issue was that SELinux didn’t update connect-related permissions when TCP Fast Open was introduced, potentially bypassing proper access checks. The root cause is in the socket_sendmsg() path, where the code fail...

CVE-2026-72243

In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update...

CVE-2026-72243 selinux: check connect-related permissions on TCP Fast Open

In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update...

EUVD-2026-59142

In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update...

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;...

EUVD-2026-58897

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;...

CVE-2026-72139

The CVE concerns a Linux kernel race where per-socket authentication data (md5sig/md5sig_key) could be freed before an RCU grace period elapses during tcp_connect. In the vulnerable path, two branches (needs_md5 and needs_ao) free the md5sig_info or its keys while a socket is in TCP_SYN_SENT, ris...

CVE-2026-72020 ipvs: reset full ip_vs_seq structs in ip_vs_conn_new

In the Linux kernel, the following vulnerability has been resolved: ipvs: reset full ipvsseq structs in ipvsconnnew Commit 9a05475cebdd "ipvs: avoid kmemcachezalloc in ipvsconnnew" changed ipvsconnnew to allocate an ipvsconn object with kmemcachealloc. The function then initializes many fields...

CVE-2026-72020 ipvs: reset full ip_vs_seq structs in ip_vs_conn_new

In the Linux kernel, the following vulnerability has been resolved: ipvs: reset full ipvsseq structs in ipvsconnnew Commit 9a05475cebdd "ipvs: avoid kmemcachezalloc in ipvsconnnew" changed ipvsconnnew to allocate an ipvsconn object with kmemcachealloc. The function then initializes many fields...

CVE-2026-72020

CVE-2026-72020 affects the Linux kernel IP Virtual Server (IPVS) code. A bug in ip_vs_conn_new() caused only two ip_vs_seq members (in_seq and out_seq) to be reset, leaving init_seq and previous_delta uninitialized. For connections learned from a sync message, flags and data could be inconsistent...

CVE-2026-72020 ipvs: reset full ip_vs_seq structs in ip_vs_conn_new

In the Linux kernel, the following vulnerability has been resolved: ipvs: reset full ipvsseq structs in ipvsconnnew Commit 9a05475cebdd "ipvs: avoid kmemcachezalloc in ipvsconnnew" changed ipvsconnnew to allocate an ipvsconn object with kmemcachealloc. The function then initializes many fields...

CVE-2026-68477 ipvs: fix more places with wrong ipv6 transport offsets

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause...

EUVD-2026-59099

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause...

ja4 v1.0.0

JA4+™ Network Fingerprinting JA4+ is a suite of network fingerprinting methods by FoxIO that are easy to use and easy to share. These methods are both human and machine readable to facilitate more effective threat-hunting and analysis. The use-cases for these fingerprints include scanning for...

Nmap 7.99 Denial of Service via Zero-Length TCP Option Packet

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PT-2026-72409

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the sunrpc component during TLS handshake cancellation. When the wait for completion interruptible timeout function in svc tcp handshake returns a timeout or...

CVE-2026-74385: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: check return value of nvmettcpsetqueuesock The return value of nvmettcpsetqueuesock is currently ignored in nvmettcptlshandshakedone. If it fails e.g., due to the socket not being in TCPESTABLISHED state, the socket...