CVE Database›CVE-2023-6535

CVE-2023-6535

kernel: NULL pointer dereference in nvmet_tcp_execute_request

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · December 11, 2023

Updated · August 7, 2026

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.

Statement

Red Hat Enterprise Linux 6 and 7 are not affected by this issue as it doesn't ship the related NVMe driver code.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

To mitigate this issue, prevent module nvmet-tcp from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference