CVE-2020-12656 Explained : Impact and Mitigation
Learn about CVE-2020-12656, a disputed memory leak vulnerability in the Linux kernel through version 5.6.10, potentially allowing unauthorized access to kernel memory. Find mitigation steps and prevention measures here.
A memory leak vulnerability in the Linux kernel through version 5.6.10 has been identified, allowing unauthorized access to kernel memory.
Understanding CVE-2020-12656
This CVE involves a disputed memory leak issue in the Linux kernel's rpcsec_gss_krb5 implementation.
What is CVE-2020-12656?
The gss_mech_free function in the Linux kernel lacks certain domain_release calls, resulting in a memory leak. Although disputed, the vulnerability could potentially allow unauthorized access to kernel memory.
The Impact of CVE-2020-12656
The memory leak could lead to unauthorized access to sensitive kernel memory, potentially compromising system security.
Technical Details of CVE-2020-12656
This section provides technical details about the vulnerability.
Vulnerability Description
The gss_mech_free function in the Linux kernel through version 5.6.10 lacks certain domain_release calls, leading to a memory leak.
Affected Systems and Versions
- Affected System: Linux kernel through version 5.6.10
- Affected Component: rpcsec_gss_krb5 implementation
Exploitation Mechanism
The vulnerability allows unauthorized users to access kernel memory, potentially compromising system integrity.
Mitigation and Prevention
Protect your system from CVE-2020-12656 with the following steps:
Immediate Steps to Take
- Monitor security advisories for patches and updates
- Implement access controls to restrict unauthorized system access
Long-Term Security Practices
- Regularly update the Linux kernel to the latest version
- Conduct security audits to identify and address vulnerabilities
Patching and Updates
Apply relevant patches and updates provided by the Linux kernel maintainers to mitigate the memory leak vulnerability.