CVE-2022-36280 : What You Need to Know
CVE-2022-36280 involves an out-of-bounds memory access flaw in the vmwgfx driver in the Linux kernel, allowing local attackers to gain privileges and trigger a denial of service attack. Learn about the impact, technical details, and mitigation steps.
An out-of-bounds memory access vulnerability in the vmwgfx driver in the Linux kernel could allow a local attacker to gain privileges, leading to denial of service.
Understanding CVE-2022-36280
This vulnerability, assigned CVE-2022-36280, was discovered in the vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_kms.c in the Linux kernel, affecting versions below 5.13.0-52*.
What is CVE-2022-36280?
The CVE-2022-36280 vulnerability is an out-of-bounds memory access issue in the vmwgfx driver within the Linux kernel, enabling a local attacker to exploit this flaw to elevate privileges and potentially trigger a denial of service attack.
The Impact of CVE-2022-36280
If exploited, this vulnerability could allow a local attacker with a user account on the system to gain elevated privileges, compromising the integrity and availability of the system, resulting in a denial of service scenario.
Technical Details of CVE-2022-36280
Below are the technical details related to the CVE-2022-36280 vulnerability:
Vulnerability Description
The CVE-2022-36280 vulnerability involves an out-of-bounds memory access issue in the vmwgfx driver in the Linux kernel. This flaw occurs in the GPU component and is accessible via the device file '/dev/dri/renderD128 (or Dxxx)'.
Affected Systems and Versions
- Vendor: Linux
- Product: Kernel
- Affected Versions: v3.2-rc1 to 5.13.0-52*
Exploitation Mechanism
The vulnerability can be exploited by a local attacker with a user account on the system.
Mitigation and Prevention
To address the CVE-2022-36280 vulnerability, consider the following mitigation steps:
Immediate Steps to Take
- Apply the security updates provided by the Linux kernel maintainers.
- Monitor for any suspicious activities on the affected systems.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement least privilege access controls to restrict user privileges.
Patching and Updates
Refer to the following references for patching and updates:
Credit: This vulnerability was reported by Ziming Zhang (ezrakiez@gmail.com) from Ant Group Light-Year Security Lab.