synced 5 MIN AGO
01 Record

CVE-2023-6536

Kernel: null pointer dereference in __nvmet_req_complete

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
View raw JSON

02 Description

Kernel: null pointer dereference in __nvmet_req_complete

03 Exploitation and scoring

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
1.54% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 74.5% 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

Published
2024-02-07 21:05Z2 YR AGO
Last updated
2025-11-06 21:45Z11 MO AGO
Reserved
2023-12-05
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
e66adef0d2de2ebaa3623cf45f4c653efdbbc50b39b11fd51dc633017e75a058

05 Affected products

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

07 Fixed in

AlmaLinux 8

  • bpftool
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-abi-stablelists
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-cross-headers
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-doc
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools-libs
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools-libs-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • perf
    Fixed in 4.18.0-513.18.1.el8_9
  • python3-perf
    Fixed in 4.18.0-513.18.1.el8_9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • bpftool
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-abi-stablelists
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-cross-headers
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-debug-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-doc
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools-libs
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-tools-libs-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-core
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-513.18.1.el8_9
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-513.18.1.el8_9
  • perf
    Fixed in 4.18.0-513.18.1.el8_9
  • python3-perf
    Fixed in 4.18.0-513.18.1.el8_9

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • linux
    Fixed in 6.1.76-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 6.6.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 6.6.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux-hwe-edge
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-azure
    No fix yet
  • linux-azure-5.3
    No fix yet
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.3
    No fix yet
  • linux-gke-4.15
    No fix yet
  • linux-gke-5.4
    No fix yet
  • linux-gkeop-5.4
    No fix yet
  • linux-hwe
    No fix yet
  • linux-hwe-edge
    No fix yet
  • linux-oem
    No fix yet
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux
    Fixed in 5.4.0-176.196
  • linux-aws
    Fixed in 5.4.0-1122.132
  • linux-aws-5.11
    No fix yet
  • linux-aws-5.13
    No fix yet
  • linux-aws-5.15
    Fixed in 5.15.0-1057.63~20.04.1
  • linux-aws-5.8
    No fix yet
  • linux-azure
    Fixed in 5.4.0-1127.134
  • linux-azure-5.11
    No fix yet
  • linux-azure-5.13
    No fix yet
  • linux-azure-5.15
    Fixed in 5.15.0-1060.69~20.04.1
  • linux-azure-5.8
    No fix yet
  • linux-azure-fde
    No fix yet
  • linux-bluefield
    Fixed in 5.4.0-1082.89
  • linux-gcp
    Fixed in 5.4.0-1126.135
  • linux-gcp-5.11
    No fix yet
  • linux-gcp-5.13
    No fix yet
  • linux-gcp-5.15
    Fixed in 5.15.0-1055.63~20.04.1
  • linux-gcp-5.8
    No fix yet
  • linux-gke
    No fix yet
  • linux-gke-5.15
    No fix yet
  • linux-gkeop
    Fixed in 5.4.0-1089.93
  • linux-gkeop-5.15
    Fixed in 5.15.0-1040.46~20.04.1
  • linux-hwe-5.11
    No fix yet
  • linux-hwe-5.13
    No fix yet
  • linux-hwe-5.15
    Fixed in 5.15.0-102.112~20.04.1
  • linux-hwe-5.8
    No fix yet
  • linux-ibm
    Fixed in 5.4.0-1069.74
  • linux-ibm-5.15
    Fixed in 5.15.0-1050.53~20.04.1
  • linux-intel-5.13
    No fix yet
  • linux-intel-iotg-5.15
    Fixed in 5.15.0-1052.58~20.04.1
  • linux-iot
    Fixed in 5.4.0-1034.35
  • linux-kvm
    Fixed in 5.4.0-1110.117
  • linux-lowlatency-hwe-5.15
    Fixed in 5.15.0-102.112~20.04.1
  • linux-nvidia-tegra-5.15
    Fixed in 5.15.0-1025.25~20.04.1
  • linux-oem-5.10
    No fix yet
  • linux-oem-5.13
    No fix yet
  • linux-oem-5.14
    No fix yet
  • linux-oem-5.6
    No fix yet
  • linux-oracle
    Fixed in 5.4.0-1121.130
  • linux-oracle-5.11
    No fix yet

10 further packages in Ubuntu 20.04 LTS not shown (first 40 listed).

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux
    Fixed in 5.15.0-102.112
  • linux-allwinner-5.19
    No fix yet
  • linux-aws
    Fixed in 5.15.0-1057.63
  • linux-aws-5.19
    No fix yet
  • linux-aws-6.2
    No fix yet
  • linux-aws-6.5
    No fix yet
  • linux-azure
    Fixed in 5.15.0-1060.69
  • linux-azure-5.19
    No fix yet
  • linux-azure-6.2
    No fix yet
  • linux-azure-6.5
    Fixed in 6.5.0-1022.23~22.04.1
  • linux-azure-fde
    Fixed in 5.15.0-1060.69.1
  • linux-azure-fde-5.19
    No fix yet
  • linux-azure-fde-6.2
    No fix yet
  • linux-gcp
    Fixed in 5.15.0-1055.63
  • linux-gcp-5.19
    No fix yet
  • linux-gcp-6.2
    No fix yet
  • linux-gcp-6.5
    Fixed in 6.5.0-1022.24~22.04.1
  • linux-gke
    Fixed in 5.15.0-1054.59
  • linux-gkeop
    Fixed in 5.15.0-1040.46
  • linux-hwe-5.19
    No fix yet
  • linux-hwe-6.2
    No fix yet
  • linux-hwe-6.5
    Fixed in 6.5.0-41.41~22.04.2
  • linux-ibm
    Fixed in 5.15.0-1050.53
  • linux-intel-iotg
    Fixed in 5.15.0-1052.58
  • linux-kvm
    Fixed in 5.15.0-1054.59
  • linux-lowlatency
    Fixed in 5.15.0-102.112
  • linux-lowlatency-hwe-5.19
    No fix yet
  • linux-lowlatency-hwe-6.2
    No fix yet
  • linux-lowlatency-hwe-6.5
    Fixed in 6.5.0-41.41.1~22.04.1
  • linux-nvidia
    Fixed in 5.15.0-1048.48
  • linux-nvidia-6.2
    No fix yet
  • linux-nvidia-6.5
    Fixed in 6.5.0-1021.22
  • linux-nvidia-tegra
    Fixed in 5.15.0-1025.25
  • linux-nvidia-tegra-igx
    Fixed in 5.15.0-1012.12
  • linux-oem-5.17
    No fix yet
  • linux-oem-6.0
    No fix yet
  • linux-oem-6.1
    No fix yet
  • linux-oem-6.5
    Fixed in 6.5.0-1024.25
  • linux-oracle
    Fixed in 5.15.0-1055.61
  • linux-oracle-6.5
    Fixed in 6.5.0-1024.24~22.04.1

9 further packages in Ubuntu 22.04 LTS not shown (first 40 listed).

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Nvidia-BlueField 22.04 LTS

  • linux-bluefield
    Fixed in 5.15.0-1040.42

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • linux-aws-5.4
    Fixed in 5.4.0-1122.132~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure-5.4
    Fixed in 5.4.0-1127.134~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-gcp-5.4
    Fixed in 5.4.0-1126.135~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-hwe-5.4
    Fixed in 5.4.0-175.195~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-ibm-5.4
    Fixed in 5.4.0-1069.74~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-oracle-5.4
    Fixed in 5.4.0-1121.130~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-raspi-5.4
    Fixed in 5.4.0-1106.118~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • linux-azure-fde-5.15
    Fixed in 5.15.0-1114.123~20.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-preview 22.04 LTS

  • linux-aws-fips
    No fix yet
  • linux-azure-fips
    No fix yet
  • linux-fips
    No fix yet
  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 20.04 LTS

  • linux-aws-fips
    Fixed in 5.4.0-1122.132+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 5.4.0-1127.134+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 5.4.0-1096.106
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-gcp-fips
    Fixed in 5.4.0-1126.135+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 22.04 LTS

  • linux-aws-fips
    Fixed in 5.15.0-1057.63+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 5.15.0-1060.69+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 5.15.0-102.112+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-gcp-fips
    Fixed in 5.15.0-1055.63+fips2
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 20.04 LTS

  • linux-aws-fips
    No fix yet
  • linux-azure-fips
    No fix yet
  • linux-fips
    No fix yet
  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro Realtime 22.04 LTS

  • linux-intel-iot-realtime
    Fixed in 5.15.0-1050.52
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-realtime
    Fixed in 5.15.0-1058.66
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro Realtime 24.04 LTS

  • linux-raspi-realtime
    Fixed in 6.8.0-2001.1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.