CVE-2023-53643: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: don't access released socket during error recovery While the error recovery work is temporarily failing reconnect attempts, running the 'nvme list' command causes a kernel NULL pointer dereference by calling getsockname() with a released socket. During error recovery work, the nvme tcp socket is released and a new one created, so it is not safe to access the socket without proper check.

Affected products

• Linux Linux Kernel: from 6.1, before 6.1.18 (fixed in 6.1.18); from 6.2, before 6.2.5 (fixed in 6.2.5)

Published 2025-10-07. Last modified 2026-08-04.