CVE-2021-26365 : What You Need to Know
Learn about CVE-2021-26365 affecting multiple AMD processors due to firmware binary headers flaw triggering out-of-bounds reads, leading to denial of service and information leakage.
This CVE-2021-26365 article provides detailed information about a vulnerability affecting multiple AMD processors, potentially leading to denial of service or limited information leakage through out-of-bounds memory reads.
Understanding CVE-2021-26365
CVE-2021-26365 involves certain size values in firmware binary headers that could trigger out-of-bounds reads during signature validation, posing a risk of denial of service and limited information leakage.
What is CVE-2021-26365?
Certain size values in firmware binary headers could trigger out of bounds reads during signature validation, leading to denial of service or potentially limited leakage of information about out-of-bounds memory contents.
The Impact of CVE-2021-26365
The vulnerability could result in denial of service or limited information leakage due to out-of-bounds memory reads during signature validation.
Technical Details of CVE-2021-26365
CVE-2021-26365 affects multiple AMD processors, including Ryzen and Athlon series processors, leading to potential denial of service or information leakage.
Vulnerability Description
Certain size values in firmware binary headers trigger out-of-bounds reads during signature validation, potentially causing denial of service or limited information leakage.
Affected Systems and Versions
Affected processors include Ryzen 2000, 3000, 5000, and 6000 series, as well as Athlon 3000 series, impacting various platforms.
Exploitation Mechanism
The vulnerability arises from improper handling of size values in firmware binary headers, allowing for out-of-bounds reads during signature validation.
Mitigation and Prevention
Understanding the impact of CVE-2021-26365 is crucial for implementing effective mitigation and prevention strategies to safeguard affected systems.
Immediate Steps to Take
Users are advised to refer to AMD's security bulletin (AMD-SB-4001) for specific mitigation steps and updates to address the vulnerability.
Long-Term Security Practices
Implementing regular security updates, monitoring for security advisories, and adopting secure coding practices can help prevent similar vulnerabilities in the long run.
Patching and Updates
Stay informed about security patches and updates from AMD to address CVE-2021-26365 and enhance the security posture of affected systems.