CVE-2019-8413 : Security Advisory and Response

A system crash vulnerability exists in Xiaomi MIX 2 devices with the 4.4.78 kernel due to a NULL pointer dereference issue in the ioctl interface of specific device files.

Understanding CVE-2019-8413

This CVE involves a vulnerability that can lead to a system crash on Xiaomi MIX 2 devices.

What is CVE-2019-8413?

The vulnerability in the ioctl interface of /dev/elliptic1 or /dev/elliptic0 device files on Xiaomi MIX 2 devices with the 4.4.78 kernel can be exploited to trigger a system crash using IOCTL 0x4008c575.

The Impact of CVE-2019-8413

Exploiting this vulnerability can result in a system crash on affected devices, potentially leading to denial of service.

Technical Details of CVE-2019-8413

This section provides more technical insights into the CVE.

Vulnerability Description

A NULL pointer dereference in the ioctl interface of /dev/elliptic1 or /dev/elliptic0 device files can be exploited to cause a system crash on Xiaomi MIX 2 devices with the 4.4.78 kernel using IOCTL 0x4008c575.

Affected Systems and Versions

Affected Systems: Xiaomi MIX 2 devices
Affected Kernel Version: 4.4.78

Exploitation Mechanism

The vulnerability can be exploited by utilizing IOCTL 0x4008c575 on the specified device files to trigger a system crash.

Mitigation and Prevention

Protecting systems from CVE-2019-8413 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor vendor communications for updates and advisories.

Long-Term Security Practices

Regularly update and patch systems to address known vulnerabilities.
Implement security best practices to mitigate potential risks.

Patching and Updates

Stay informed about security updates released by Xiaomi for the affected devices and apply them as soon as possible.