CVE-2025-40186 tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().

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-...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that originates from an incorrect call to reqskfastopenremove in tcpconnrequest, which could result in a reference count underfl...

Important: kernel-livepatch-6.1.148-173.267

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal CVE-2025-39677 In the Linux kernel, the following vulnerability has been resolved: fs/buffer: fix use-after-free when call bhread helper CVE-2025-39691 In...

Important: kernel-livepatch-6.12.48-67.114

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. CVE-2025-39955 Affected Packages: kernel-livepatch-6.12.48-67.114 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989472)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989472 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpfastopenblackholetimeout. While reading...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988652)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988652 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpfastopen. While reading sysctltcpfastopen, it can be changed...

CentOS 9 : kernel-5.14.0-631.el9

"The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the kernel-5.14.0-631.el9 build changelog. - In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported t...

Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2025-1254)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1254 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: always use READONCE to read ring provided buffer lengths CVE-2025-39816 In the Linux kernel, the following...

EUVD-2022-54857

In the Linux kernel, the following vulnerability has been resolved: tcp: tcprtxsynack can be called from process context Laurent reported the enclosed report 1 This bug triggers with following coditions: 0 Kernel built with CONFIGDEBUGPREEMPT=y 1 A new passive FastOpen TCP socket is created. This...

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

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CVE-2025-39955

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

AZL-76431 CVE-2025-39955 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

UBUNTU-CVE-2025-39955

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

CVE-2025-39955

The CVE-2025-39955 entry concerns the Linux kernel TCP Fast Open path. The root cause is that tcp_disconnect() failed to clear tcp_sk(sk)->fastopen_rsk, allowing the retransmit timer to trigger while a TFO socket is being reused, potentially delaying or missing a retransmission. The fix implem...

CVE-2025-39955 tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

CVE-2025-39955 tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

CVE-2025-39955

In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcpsksk-fastopenrsk in tcpdisconnect. syzbot reported the splat below where a socket had tcpsksk-fastopenrsk in the TCPESTABLISHED state. 0 syzbot reused the server-side TCP Fast Open socket as a new client before the...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from tcpdisconnect not clearing tcpsksk-fastopenrsk, which could result in packets not being retransmitted...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987249)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987249 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpfastopenblackholetimeout. While reading...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987003)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987003 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp: Fix data-races around sysctltcpfastopen. While reading sysctltcpfastopen, it can be changed...