7.5
CWE
476
Advisory Published
CVE Published
Updated

CVE-2023-6356: Kernel: null pointer dereference in nvmet_tcp_build_iovec

First published: Mon Dec 11 2023(Updated: )

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 and causing kernel panic and a denial of service.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
Red Hat CodeReady Linux Builder=8.6
Red Hat CodeReady Linux Builder=9.2
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support=8.6_ppc64le
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support=9.2_ppc64le
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support=8.6_aarch64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support=9.2_aarch64
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support=9.2_s390x
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
Red Hat Enterprise Linux Server EUS=8.6
Red Hat Enterprise Linux Server EUS=9.2
Red Hat Enterprise Linux for ARM64 EUS=8.6_aarch64
Red Hat Enterprise Linux for ARM64 EUS=9.2_aarch64
Red Hat Enterprise Linux for IBM Z Systems (s390x)=8.6_s390x
Red Hat Enterprise Linux for IBM Z Systems (s390x)=9.2_s390x
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=8.6_ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=9.2_ppc64le
Red Hat Enterprise Linux for Real Time=9.2
Red Hat Enterprise Linux for Real Time for NFV=9.2
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Server=9.2
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=8.6_ppc64le
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=9.2_ppc64le
Red Hat Enterprise Linux Server=8.6
All of
Red Hat Virtualization Host EUS=4.0
Red Hat Enterprise Linux=8.0
Linux Kernel>=5.0<5.4.268
Linux Kernel>=5.5<5.10.209
Linux Kernel>=5.11<5.15.148
Linux Kernel>=5.16<6.1.75
Linux Kernel>=6.2<6.6.14
Linux Kernel>=6.7<6.7.2
Debian Linux=10.0
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.20-1
6.12.21-1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-6356?

    CVE-2023-6356 is classified as a critical severity vulnerability due to its potential to cause a kernel panic and denial of service.

  • What versions are affected by CVE-2023-6356?

    CVE-2023-6356 impacts specific versions of the Linux kernel and various IBM and Red Hat software components including versions up to and including ISVG 10.0.2.

  • How can I mitigate the effects of CVE-2023-6356?

    To mitigate CVE-2023-6356, updating the Linux kernel and related software components to the latest patched versions is recommended.

  • Who is vulnerable to CVE-2023-6356?

    Organizations using affected versions of the Linux kernel and IBM Security Verify Governance, Identity Manager products are vulnerable to CVE-2023-6356.

  • What exploits are associated with CVE-2023-6356?

    CVE-2023-6356 allows unauthenticated attackers to exploit the vulnerability through crafted TCP packets to trigger a NULL pointer dereference.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203