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SRC: CVELISTV5 / SYNC: T-14M / LAG: 13M / REC: 386,707 / REV: C6-1C / V4

01 RecordSTATE: PUBLISHED

CVE-2023-6356

Kernel: null pointer dereference in nvmet_tcp_build_iovec

MediumPUBLISHEDCNA: redhat

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

02 Description

CNA: redhat

Kernel: null pointer dereference in nvmet_tcp_build_iovec

03 Exploitation and scoring

SRC: CISA, FIRST, NVD, RED HAT

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.8% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

SCHEMA: 5.2

Published

2024-02-07 21:04Z2 YR AGO

Last updated

2025-11-06 21:45Z10 MO AGO

Reserved

2023-11-28

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

1228d7ec09d43f7f72d7b968ecb6eb6157e80b08b5fa53efd1f182074fb84e77

05 Affected products

PAIRS: 9

VendorProductVersionsPlatforms

Red HatRed Hat Enterprise Linux 8Not specified—

Red HatRed Hat Enterprise Linux 8.6 Extended Update SupportNot specified—

Red HatRed Hat Enterprise Linux 8.8 Extended Update SupportNot specified—

Red HatRed Hat Enterprise Linux 9Not specified—

Red HatRed Hat Enterprise Linux 9.2 Extended Update SupportNot specified—

Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8Not specified—

Red HatRHOL-5.8-RHEL-9Not specified—

Red HatRed Hat Enterprise Linux 6Not specified—

Red HatRed Hat Enterprise Linux 7Not specified—

06 References

REFS: 13

access.redhat.comRHSA-2024:0723https://access.redhat.com/errata/RHSA-2024:0723vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:0724https://access.redhat.com/errata/RHSA-2024:0724vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:0725https://access.redhat.com/errata/RHSA-2024:0725vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:0881https://access.redhat.com/errata/RHSA-2024:0881vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:0897https://access.redhat.com/errata/RHSA-2024:0897vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:1248https://access.redhat.com/errata/RHSA-2024:1248vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:2094https://access.redhat.com/errata/RHSA-2024:2094vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2024:3810https://access.redhat.com/errata/RHSA-2024:3810vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6356vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2254054https://bugzilla.redhat.com/show_bug.cgi?id=2254054issue-trackingx_refsource_REDHAT
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
security.netapp.comhttps://security.netapp.com/advisory/ntap-20240415-0002/
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/