CVE-2023-6536

MEDIUM
Published Feb 7, 2024 Modified Nov 4, 2025 CWE-476

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, causing kernel panic and a denial of service.

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CVSS v3.1 Score

6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
redhat codeready_linux_builder_eus
redhat codeready_linux_builder_eus
redhat codeready_linux_builder_eus_for_power_little_endian_eus
redhat codeready_linux_builder_eus_for_power_little_endian_eus
redhat codeready_linux_builder_for_arm64_eus
redhat codeready_linux_builder_for_arm64_eus
redhat codeready_linux_builder_for_ibm_z_systems_eus
redhat enterprise_linux
redhat enterprise_linux
redhat enterprise_linux_eus
redhat enterprise_linux_eus
redhat enterprise_linux_for_arm_64_eus
redhat enterprise_linux_for_arm_64_eus
redhat enterprise_linux_for_ibm_z_systems_eus
redhat enterprise_linux_for_ibm_z_systems_eus
redhat enterprise_linux_for_power_little_endian_eus
redhat enterprise_linux_for_power_little_endian_eus
redhat enterprise_linux_for_real_time
redhat enterprise_linux_for_real_time_for_nfv
redhat enterprise_linux_server_aus
redhat enterprise_linux_server_aus
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
redhat enterprise_linux_server_tus
redhat enterprise_linux
redhat virtualization_host
debian debian_linux

References

Frequently Asked Questions

What is CVE-2023-6536? +
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, causing kernel panic and a denial of service. It has a CVSS v3.1 base score of 6.5 (MEDIUM).
How severe is CVE-2023-6536? +
CVE-2023-6536 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-6536? +
CVE-2023-6536 affects products from debian, linux, redhat, specifically: codeready_linux_builder_eus, codeready_linux_builder_eus_for_power_little_endian_eus, codeready_linux_builder_for_arm64_eus, codeready_linux_builder_for_ibm_z_systems_eus, debian_linux, enterprise_linux, enterprise_linux_eus, enterprise_linux_for_arm_64_eus, enterprise_linux_for_ibm_z_systems_eus, enterprise_linux_for_power_little_endian_eus, enterprise_linux_for_real_time, enterprise_linux_for_real_time_for_nfv, enterprise_linux_server_aus, enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions, enterprise_linux_server_tus, linux_kernel, virtualization_host. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-6536? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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