kernel: Linux kernel: Privilege escalation or Denial of Service via TCP Fast Open vulnerability

A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a memory corruption vulnerability, specifically a use-after-free and double-free, within the TCP Fast Open TFO socket processing. This occurs when a listener is closed while a TFO socket is being processed in...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: Linux kernel: Privilege escalation or Denial of Service via TCP Fast Open vulnerability

A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a memory corruption vulnerability, specifically a use-after-free and double-free, within the TCP Fast Open TFO socket processing. This occurs when a listener is closed while a TFO socket is being processed in...

kernel: Linux kernel: Privilege escalation or Denial of Service via TCP Fast Open vulnerability

A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a memory corruption vulnerability, specifically a use-after-free and double-free, within the TCP Fast Open TFO socket processing. This occurs when a listener is closed while a TFO socket is being processed in...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

SUSE CVE-2025-68188

In the Linux kernel, the following vulnerability has been resolved: tcp: use dstdevrcu in tcpfastopenactivedisableofocheck Use RCU to avoid a pair of atomic operations and a potential UAF on dstdev-flags...

CVE-2025-68188

CVE-2025-68188 concerns the Linux kernel TCP Fast Open code. The vulnerability arises from using dst_dev()->flags without proper RCU protection in tcp_fastopen_active_disable_ofo_check(), risking a use-after-free of the network device structure. A fix was applied to use dst_dev_rcu() to synchr...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: Linux kernel: Privilege escalation or Denial of Service via TCP Fast Open vulnerability

A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a memory corruption vulnerability, specifically a use-after-free and double-free, within the TCP Fast Open TFO socket processing. This occurs when a listener is closed while a TFO socket is being processed in...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

kernel: Linux kernel: Privilege escalation or Denial of Service via TCP Fast Open vulnerability

A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a memory corruption vulnerability, specifically a use-after-free and double-free, within the TCP Fast Open TFO socket processing. This occurs when a listener is closed while a TFO socket is being processed in...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: nfsd: handle getclientlocked failure in nfsd4setclientidconfirm CVE-2025-38724 kernel: wifi: cfg80211: fix use-after-free in cmpbss CVE-2025-39864 kernel: e1000e: fix heap overflow in...

kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect()

A flaw was found in the TCP subsystem in tcpdisconnect of the Linux kernel.The server-side TCP Fast Open socket was reused as a new client before the TFO socket completes, leading to an information leak...

EUVD-2025-150388

In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqskfastopenremove in tcpconnrequest. syzbot reported the splat below in tcpconnrequest. 0 If a listener is closed while a TFO socket is being processed in tcpconnrequest, inetcskreqskqueueadd does not set reqsk-...

CVE-2025-40186

In the Linux kernel, the following vulnerability has been resolved: tcp: Don't call reqskfastopenremove in tcpconnrequest. syzbot reported the splat below in tcpconnrequest. 0 If a listener is closed while a TFO socket is being processed in tcpconnrequest, inetcskreqskqueueadd does not set reqsk-...