CVE-2017-11030 : What You Need to Know

Android for MSM, Firefox OS for MSM, QRD Android, and all Android releases from CAF using the Linux kernel are affected by a vulnerability that allows userspace to write into kernel memory within the HDMI video driver.

Understanding CVE-2017-11030

This CVE entry identifies a specific vulnerability in the HDMI video driver function of various Qualcomm products running Android releases from CAF with the Linux kernel.

What is CVE-2017-11030?

The function hdmi_edid_sysfs_rda_res_info() in Android for MSM, Firefox OS for MSM, QRD Android, and all Android releases from CAF using the Linux kernel permits userspace to execute a freeform write operation into kernel memory within the HDMI video driver.

The Impact of CVE-2017-11030

This vulnerability could be exploited by a malicious user to write arbitrary data into kernel memory, potentially leading to privilege escalation or system compromise.

Technical Details of CVE-2017-11030

The technical aspects of this CVE include:

Vulnerability Description

The hdmi_edid_sysfs_rda_res_info() function in the HDMI video driver allows unauthorized userspace access to kernel memory, enabling arbitrary write operations.

Affected Systems and Versions

Products: Android for MSM, Firefox OS for MSM, QRD Android
Vendor: Qualcomm, Inc.
Versions: All Android releases from CAF using the Linux kernel

Exploitation Mechanism

The vulnerability arises from improper input validation within the HDMI video driver, allowing userspace to perform unauthorized write operations into kernel memory.

Mitigation and Prevention

To address CVE-2017-11030, follow these steps:

Immediate Steps to Take

Apply security patches provided by Qualcomm or the respective vendors.
Monitor vendor security bulletins for updates and advisories.

Long-Term Security Practices

Implement the principle of least privilege to restrict access to critical system components.
Regularly update and patch software to mitigate known vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches from Qualcomm or the relevant vendors to address the vulnerability effectively.