CVE-2023-35828 : Security Advisory and Response
CVE-2023-35828 involves a use-after-free vulnerability in the Linux kernel before version 6.3.2, allowing attackers to escalate privileges or launch denial of service attacks.
An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.
Understanding CVE-2023-35828
This CVE involves a use-after-free vulnerability in the Linux kernel which can be exploited by attackers.
What is CVE-2023-35828?
CVE-2023-35828 is a use-after-free vulnerability discovered in the Linux kernel before version 6.3.2, specifically in the renesas_usb3_remove function in drivers/usb/gadget/udc/renesas_usb3.c.
The Impact of CVE-2023-35828
Exploitation of this vulnerability could lead to potential privilege escalation or denial of service attacks by malicious actors targeting affected systems.
Technical Details of CVE-2023-35828
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is due to improper handling of memory in the renesas_usb3_remove function, leading to a use-after-free condition that can be exploited by attackers.
Affected Systems and Versions
All versions of the Linux kernel before 6.3.2 are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting special input to trigger the use-after-free condition, potentially gaining unauthorized access or disrupting normal system operation.
Mitigation and Prevention
It's crucial to take immediate steps to mitigate the risks associated with CVE-2023-35828.
Immediate Steps to Take
- Apply the latest security updates provided by Linux kernel maintainers.
- Monitor security advisories for patches and guidance on securing affected systems.
Long-Term Security Practices
- Implement strong security measures, such as access controls and network segmentation, to reduce the attack surface.
- Regularly update and patch systems to address known vulnerabilities and strengthen overall security posture.
Patching and Updates
Stay informed about security updates and patches released by the Linux kernel community to address CVE-2023-35828.