CVE-2023-6535
kernel: NULL pointer dereference in nvmet_tcp_execute_request
Severity
ModerateRed Hat Product Security
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 · 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference