CVE-2023-53809: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: l2tp: Avoid possible recursive deadlock in l2tptunnelregister When a file descriptor of pppol2tp socket is passed as file descriptor of UDP socket, a recursive deadlock occurs in l2tptunnelregister. This situation is reproduced b...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-987712)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987712 advisory. In the Linux kernel, the following vulnerability has been resolved: l2tp: close all race conditions in l2tptunnelregister The code in l2tptunnelregister is racy in...

CVE-2023-53020 l2tp: close all race conditions in l2tp_tunnel_register()

In the Linux kernel, the following vulnerability has been resolved: l2tp: close all race conditions in l2tptunnelregister The code in l2tptunnelregister is racy in several ways: 1. It modifies the tunnel socket after publishing it. 2. It calls setupudptunnelsock on an existing socket without...

CVE-2023-53020: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: l2tp: close all race conditions in l2tptunnelregister The code in l2tptunnelregister is racy in several ways: 1. It modifies the tunnel socket after publishing it. 2. It calls setupudptunnelsock on an existing socket without...