CVE-2021-39800 : What You Need to Know

This CVE-2021-39800 article provides insights on an information disclosure vulnerability affecting Android's kernel.

Understanding CVE-2021-39800

This section delves into the details of the CVE-2021-39800 vulnerability.

What is CVE-2021-39800?

CVE-2021-39800 is an information disclosure vulnerability present in the ion_ioctl function of ion-ioctl.c in Android's kernel. This flaw allows leaking kernel head data through a use-after-free scenario, potentially leading to local information exposure without requiring additional execution privileges.

The Impact of CVE-2021-39800

This vulnerability could be exploited locally to disclose sensitive kernel information without the need for user interaction.

Technical Details of CVE-2021-39800

In this section, the technical aspects of CVE-2021-39800 are discussed.

Vulnerability Description

Vulnerability Type: Information Disclosure
Location: ion_ioctl function of ion-ioctl.c
Risk: Local information disclosure

Affected Systems and Versions

The following system version is impacted:

Product: Android
Version: Android kernel

Exploitation Mechanism

The vulnerability occurs due to a use-after-free flaw in the ion_ioctl function, allowing the leakage of kernel head data.

Mitigation and Prevention

Learn about mitigating measures and practices to enhance security.

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor security bulletins for updates.

Long-Term Security Practices

Conduct regular security assessments.
Implement least privilege access.

Patching and Updates

Stay informed about security patches and updates to safeguard your system from potential exploits.