CVE-2023-6535 - CVE House
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Status published Medium CVE-2023-6535

Kernel: null pointer dereference in nvmet_tcp_execute_request

Vulnerability Description

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Red Hat would like to thank Alon Zahavi for reporting this issue.

Affected Vendor

Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, RHOL-5.8-RHEL-9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Vulnerable Versions:
0:4.18.0-513.18.1.rt7.320.el8_9, 0:4.18.0-513.18.1.el8_9, 0:4.18.0-372.91.1.el8_6, 0:4.18.0-477.58.1.el8_8, 0:5.14.0-362.24.1.el9_3, 0:5.14.0-284.52.1.el9_2, 0:5.14.0-284.52.1.rt14.337.el9_2, v5.8.6-22, v5.8.6-11, v6.8.1-407, v5.8.6-19, v1.0.0-479, v5.8.6-7, v0.4.0-247, v5.8.6-5, v1.1.0-227, v5.8.1-470, v2.9.6-14, v5.8.6-2, v5.8.6-24, v5.8.6-10, v0.1.0-525, v0.1.0-224, v0.28.1-56

Timeline

Official Publish: February 7th, 2024
Last Modified: November 6th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)