CVE-2023-6356

Advisory lineage Upstream: 0 Downstream: 35
Modified
Published: 07 Feb 2024, 21:04
Last modified:06 Nov 2025, 21:45

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Feb 2024, 21:04
Published
Vulnerability first disclosed
06 Nov 2025, 21:45
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux_kernel

    ≥ 5.0, < 5.4.268 | ≥ 5.5, < 5.10.209 | ≥ 5.11, < 5.15.148 | ≥ 5.16, < 6.1.75 | ≥ 6.2, < 6.6.14 | ≥ 6.7, < 6.7.2

  • redhat•codeready_linux_builder_eus

    8.6 | 9.2

  • redhat•codeready_linux_builder_eus_for_power_little_endian_eus

    8.6_ppc64le | 9.2_ppc64le

  • redhat•codeready_linux_builder_for_arm64_eus

    8.6_aarch64 | 9.2_aarch64

  • redhat•codeready_linux_builder_for_ibm_z_systems_eus

    9.2_s390x

  • redhat•enterprise_linux

    8.0 | 9.0

  • redhat•enterprise_linux_eus

    8.6 | 9.2

  • redhat•enterprise_linux_for_arm_64_eus

    8.6_aarch64 | 9.2_aarch64

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    8.6_s390x | 9.2_s390x

  • redhat•enterprise_linux_for_power_little_endian_eus

    8.6_ppc64le | 9.2_ppc64le

  • redhat•enterprise_linux_for_real_time

    9.2

  • redhat•enterprise_linux_for_real_time_for_nfv

    9.2

  • redhat•enterprise_linux_server_aus

    8.6 | 9.2

  • redhat•enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

    8.6_ppc64le | 9.2_ppc64le

  • redhat•enterprise_linux_server_tus

    8.6

  • redhat•virtualization_host

    4.0

References (13)