CVE record · CVE-2023-6356

Kernel: null pointer dereference in nvmet_tcp_build_iovec

CVSS 6.5 MediumEPSS 0.015 · 73rd percentile

Published by the CVE Program (CNA: redhat) at 7 Feb 2024, 21:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-513.18.1.rt7.320.el8_9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-513.18.1.el8_9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.91.1.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-477.58.1.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-362.24.1.el9_3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-362.24.1.el9_3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.52.1.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.52.1.rt14.337.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.91.1.el8_6 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/cluster-logging-operator-bundle https://catalog.redhat.com/software/containers/	unaffected v5.8.6-22 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/cluster-logging-rhel9-operator https://catalog.redhat.com/software/containers/	unaffected v5.8.6-11 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/elasticsearch6-rhel9 https://catalog.redhat.com/software/containers/	unaffected v6.8.1-407 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/elasticsearch-operator-bundle https://catalog.redhat.com/software/containers/	unaffected v5.8.6-19 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/elasticsearch-proxy-rhel9 https://catalog.redhat.com/software/containers/	unaffected v1.0.0-479 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/elasticsearch-rhel9-operator https://catalog.redhat.com/software/containers/	unaffected v5.8.6-7 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/eventrouter-rhel9 https://catalog.redhat.com/software/containers/	unaffected v0.4.0-247 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/fluentd-rhel9 https://catalog.redhat.com/software/containers/	unaffected v5.8.6-5 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/log-file-metric-exporter-rhel9 https://catalog.redhat.com/software/containers/	unaffected v1.1.0-227 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/logging-curator5-rhel9 https://catalog.redhat.com/software/containers/	unaffected v5.8.1-470 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/logging-loki-rhel9 https://catalog.redhat.com/software/containers/	unaffected v2.9.6-14 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/logging-view-plugin-rhel9 https://catalog.redhat.com/software/containers/	unaffected v5.8.6-2 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/loki-operator-bundle https://catalog.redhat.com/software/containers/	unaffected v5.8.6-24 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/loki-rhel9-operator https://catalog.redhat.com/software/containers/	unaffected v5.8.6-10 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/lokistack-gateway-rhel9 https://catalog.redhat.com/software/containers/	unaffected v0.1.0-525 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/opa-openshift-rhel9 https://catalog.redhat.com/software/containers/	unaffected v0.1.0-224 to before * rpm Other versions: affected
Red Hat	RHOL-5.8-RHEL-9 Package name: openshift-logging/vector-rhel9 https://catalog.redhat.com/software/containers/	unaffected v0.28.1-56 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2023-6356
CNA: redhat
Weakness (CWE): CWE-476
Tags: 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
Red Hat RHOL-5.8-RHEL-9
Red Hat Enterprise Linux 6
Memory corruption
Published: 7 Feb 2024
Updated: 5 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.015, the 73rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

7 Feb 2024, 21:04 UTC Confirmed by the CVE List
7 Feb 2024, 21:15 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2024:0723 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0724 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0725 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0881 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0897 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:1248 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:2094 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:3810 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2023-6356 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2254054 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.