CVE-2020-28915 : What You Need to Know
Learn about CVE-2020-28915, a buffer over-read vulnerability in the Linux kernel before 5.8.15 allowing local attackers to read kernel memory. Find mitigation steps and preventive measures here.
A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by local attackers to read kernel memory, aka CID-6735b4632def.
Understanding CVE-2020-28915
This CVE describes a buffer over-read vulnerability in the Linux kernel that could allow local attackers to access kernel memory.
What is CVE-2020-28915?
The vulnerability in the fbcon code of the Linux kernel before version 5.8.15 enables local attackers to read kernel memory, potentially leading to sensitive information exposure.
The Impact of CVE-2020-28915
The exploitation of this vulnerability could result in unauthorized access to sensitive kernel memory data by malicious actors, compromising system integrity and confidentiality.
Technical Details of CVE-2020-28915
This section provides more technical insights into the CVE.
Vulnerability Description
The buffer over-read vulnerability in the fbcon code of the Linux kernel before version 5.8.15 allows local attackers to read kernel memory, posing a risk of information disclosure.
Affected Systems and Versions
- Affected System: Linux kernel before version 5.8.15
- Affected Versions: Not applicable
Exploitation Mechanism
The vulnerability can be exploited locally by attackers to read kernel memory, potentially extracting sensitive information.
Mitigation and Prevention
Protecting systems from CVE-2020-28915 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the Linux kernel maintainers promptly.
- Monitor for any unusual system behavior that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Implement the principle of least privilege to restrict access to critical system components.
- Regularly update and patch the Linux kernel to address known vulnerabilities and enhance system security.
Patching and Updates
Ensure that the Linux kernel is updated to version 5.8.15 or newer to mitigate the vulnerability and enhance system security.