Linux Kernel NVMe over TCP NULL ptr deref Kernel Panic/DoS
CVE-2023-6536 Published on February 7, 2024

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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Vulnerability Analysis

CVE-2023-6536 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.


Products Associated with CVE-2023-6536

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-6536 are published in these products:

Linux Kernel
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Enterprise Linux Server Aus
 
Red Hat Enterprise Linux Server Tus
 
Red Hat Enterprise Linux Eus
 
Red Hat Codeready Linux Builder Eus
 
Red Hat Enterprise Linux Power Little Endian Eus
 
Red Hat Codeready Linux Builder Arm64 Eus
 
Red Hat Codeready Linux Builder Ibm Z Systems Eus
 
Red Hat Codeready Linux Builder Eus Power Little Endian Eus
 
Red Hat Enterprise Linux Server Power Little Endian Update Services Sap Solutions
 
Red Hat Enterprise Linux Arm 64 Eus
 
Red Hat Enterprise Linux Ibm Z Systems Eus
 
Red Hat Enterprise Linux Real Time Nfv
 
Red Hat Enterprise Linux For Real Time
 
Canonical Ubuntu Linux
 
Debian Linux
 
Red Hat Rhev Hypervisor
 
Red Hat Rhel Eus
 
Red Hat Logging
 

Affected Versions

Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 8.6 Extended Update Support: Red Hat Enterprise Linux 8.8 Extended Update Support: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux 9.2 Extended Update Support: Red Hat Enterprise Linux 9.2 Extended Update Support: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat RHOL-5.8-RHEL-9: Red Hat Enterprise Linux 6: Red Hat Enterprise Linux 7: Red Hat Enterprise Linux 7: Red Hat Enterprise Linux 9:

Exploit Probability

EPSS
0.02%
Percentile
5.68%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.