CVE-2023-46343 : Security Advisory and Response
Learn about the CVE-2023-46343 vulnerability in the Linux kernel before 6.5.9, its impact, affected systems, and mitigation steps. Update to secure your system.
A NULL pointer dereference vulnerability in the Linux kernel before version 6.5.9 has been identified, specifically in the send_acknowledge function in net/nfc/nci/spi.c.
Understanding CVE-2023-46343
This section will provide insights into the impact, technical details, and mitigation strategies related to CVE-2023-46343.
What is CVE-2023-46343?
The vulnerability, CVE-2023-46343, occurs in the Linux kernel prior to version 6.5.9, leading to a NULL pointer dereference in the send_acknowledge function located in net/nfc/nci/spi.c.
The Impact of CVE-2023-46343
The impact of this vulnerability allows attackers to exploit the NULL pointer dereference to cause a denial of service (DoS) condition or potentially execute arbitrary code.
Technical Details of CVE-2023-46343
This section will delve deeper into the specifics of the vulnerability, including affected systems, versions, and exploitation mechanisms.
Vulnerability Description
The vulnerability arises from improper handling of pointers in the send_acknowledge function, potentially leading to a DoS or code execution.
Affected Systems and Versions
All versions of the Linux kernel before 6.5.9 are susceptible to this vulnerability, exposing systems running on these versions to exploitation.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted requests to trigger the NULL pointer dereference, resulting in a DoS or potential code execution.
Mitigation and Prevention
This section outlines steps to mitigate the risk posed by CVE-2023-46343 and prevent exploitation.
Immediate Steps to Take
System administrators are advised to update their Linux kernel to version 6.5.9 or above, where the vulnerability has been patched and addressed.
Long-Term Security Practices
Regularly monitor for security updates and apply patches promptly to ensure systems are protected against known vulnerabilities.
Patching and Updates
Continuously stay informed about security advisories from Linux kernel sources to apply relevant patches and updates promptly.