CVE-2021-28663 : Security Advisory and Response
Discover insights into CVE-2021-28663, a vulnerability in the Arm Mali GPU kernel driver impacting Bifrost, Valhall, and Midgard GPUs, enabling privilege escalation and information disclosure.
A detailed overview of CVE-2021-28663 discussing the Arm Mali GPU kernel driver vulnerability.
Understanding CVE-2021-28663
This section provides insights into the nature and impact of the Arm Mali GPU kernel driver vulnerability.
What is CVE-2021-28663?
The CVE-2021-28663 identifies a vulnerability in the Arm Mali GPU kernel driver that allows for privilege escalation or information disclosure due to mishandling GPU memory operations, resulting in a use-after-free scenario. This vulnerability impacts certain versions of Bifrost, Valhall, and Midgard GPUs.
The Impact of CVE-2021-28663
The vulnerability can be exploited to achieve privilege escalation or disclose sensitive information, potentially leading to unauthorized access or manipulation of GPU memory.
Technical Details of CVE-2021-28663
Delve deeper into the technical aspects and implications of CVE-2021-28663.
Vulnerability Description
The vulnerability arises due to improper handling of GPU memory operations, specifically resulting in a use-after-free situation within the Arm Mali GPU kernel driver.
Affected Systems and Versions
Affected systems include Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.
Exploitation Mechanism
Attackers can potentially exploit this vulnerability to escalate privileges or disclose confidential data by manipulating GPU memory operations.
Mitigation and Prevention
Explore the steps to mitigate and prevent the exploitation of CVE-2021-28663.
Immediate Steps to Take
For immediate protection, users are advised to implement security best practices and monitor for any unusual GPU memory activities.
Long-Term Security Practices
In the long term, organizations should focus on maintaining up-to-date GPU drivers and implementing security patches promptly to address known vulnerabilities.
Patching and Updates
Regularly check for updates and patches from Arm Mali GPU kernel driver official sources to ensure the latest security fixes are in place.