CVE-2023-53643
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-02-03

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-10-07
Last Modified
2026-02-03
Generated
2026-06-16
AI Q&A
2025-10-07
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53643
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability occurs in the Linux kernel's nvme-tcp driver. During error recovery, the nvme tcp socket is released and a new one is created. However, if the 'nvme list' command is run while error recovery is temporarily failing reconnect attempts, it causes a kernel NULL pointer dereference by calling getsockname() on a released socket. This happens because the socket is accessed without proper checks after it has been released.

Impact Analysis

The vulnerability can cause a kernel NULL pointer dereference, which may lead to a kernel crash or system instability when running the 'nvme list' command during error recovery. This can result in denial of service or unexpected system behavior.

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