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Vulnerability record · CVE-2023-6535 · published 7 February 2024

CVE-2023-6535: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 1.5% · top 25.9% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
16Affected product versions listed by NVD
23References
17 Jun 2026Last modified by NVD

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.

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

Affected products

16 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2024:0723 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0724 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0725 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0881
https://access.redhat.com/errata/RHSA-2024:0897
https://access.redhat.com/errata/RHSA-2024:1248
https://access.redhat.com/errata/RHSA-2024:2094
https://access.redhat.com/errata/RHSA-2024:3810
https://access.redhat.com/security/cve/CVE-2023-6535 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254053 Issue Tracking
https://access.redhat.com/errata/RHSA-2024:0723 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0724 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0725 Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0881
https://access.redhat.com/errata/RHSA-2024:0897
https://access.redhat.com/errata/RHSA-2024:1248
https://access.redhat.com/errata/RHSA-2024:2094
https://access.redhat.com/errata/RHSA-2024:3810
https://access.redhat.com/security/cve/CVE-2023-6535 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254053 Issue Tracking
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZFYW6R64GPLUOXSQBJI3JBUX3
https://security.netapp.com/advisory/ntap-20240415-0003/

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Source: NIST National Vulnerability Database (record CVE-2023-6535), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.