CVE-2023-6356
Kernel: null pointer dereference in nvmet_tcp_build_iovec
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-476 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Feb 7, 2024 |
| Last Updated | Nov 6, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / RHOL-5.8-RHEL-9
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0723 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0724 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0725 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0881 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0897 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1248 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2094 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:3810 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-6356 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2254054 lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html security.netapp.com: https://security.netapp.com/advisory/ntap-20240415-0002/ lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/
Credits
Red Hat would like to thank Alon Zahavi for reporting this issue.