Public vulnerability disclosure
CVE-2023-6535
Kernel: null pointer dereference in nvmet_tcp_execute_request
publishedCWE-476
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.
Technical severity6.5 mediumCVSS 3.1 · CNA: redhat
Published2024-02-07Source updated 2026-11-05
Collected2026-11-052 attributed sources
Fixes and workarounds
Workaround
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.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Enterprise Linux 8 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-513.18.1.rt7.320.el8_9; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-513.18.1.el8_9; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-372.91.1.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-477.58.1.el8_8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:5.14.0-362.24.1.el9_3; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:5.14.0-284.52.1.el9_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:5.14.0-284.52.1.rt14.337.el9_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.18.0-372.91.1.el8_6; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/cluster-logging-operator-bundle
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-22; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/cluster-logging-rhel9-operator
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-11; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/elasticsearch6-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v6.8.1-407; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/elasticsearch-operator-bundle
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-19; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/elasticsearch-proxy-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v1.0.0-479; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/elasticsearch-rhel9-operator
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-7; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/eventrouter-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v0.4.0-247; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/fluentd-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-5; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/log-file-metric-exporter-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v1.1.0-227; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/logging-curator5-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v5.8.1-470; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/logging-loki-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v2.9.6-14; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/logging-view-plugin-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/loki-operator-bundle
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-24; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/loki-rhel9-operator
https://catalog.redhat.com/software/containers/ |
≥ v5.8.6-10; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/lokistack-gateway-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v0.1.0-525; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/opa-openshift-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v0.1.0-224; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| RHOL-5.8-RHEL-9 Red Hat openshift-logging/vector-rhel9
https://catalog.redhat.com/software/containers/ |
≥ v0.28.1-56; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat kernel
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat kernel-rt
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2024:0723CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:0724CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:0725CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:0881CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:0897CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:1248CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:2094CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:3810CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-6535CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2254053CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2024:0723ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:0724ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:0725ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:0881ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:0897ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:1248ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:2094ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/errata/RHSA-2024:3810ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
- https://access.redhat.com/security/cve/CVE-2023-6535ADP: CVE · vdb-entry, x_refsource_REDHAT, x_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=2254053ADP: CVE · issue-tracking, x_refsource_REDHAT, x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlADP: CVE · x_transferred
- https://security.netapp.com/advisory/ntap-20240415-0003/ADP: CVE · x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/ADP: CVE
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