CVE-2018-11904 : Exploit Details and Defense Strategies

Android releases by CAF using the Linux kernel have a vulnerability related to asynchronous callbacks. If the caller terminates early, it can lead to accessing invalid data pointers.

Understanding CVE-2018-11904

This CVE involves a common issue in Android releases by CAF using the Linux kernel, affecting how asynchronous callbacks handle pointers to local variables.

What is CVE-2018-11904?

In Android releases by CAF using the Linux kernel, a vulnerability exists in how asynchronous callbacks manage pointers to a caller's local variable. If the caller terminates prematurely, the callback function may attempt to access an invalid pointer.

The Impact of CVE-2018-11904

The vulnerability can result in accessing invalid data pointers, potentially leading to system instability or exploitation by malicious actors.

Technical Details of CVE-2018-11904

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The issue arises from how asynchronous callbacks handle pointers to local variables, leading to potential access of invalid data pointers.

Affected Systems and Versions

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

Exploitation Mechanism

If the caller terminates early, such as due to a timeout, the callback function may try to access a pointer containing invalid data.

Mitigation and Prevention

To address CVE-2018-11904, follow these mitigation strategies:

Immediate Steps to Take

Apply security patches provided by Qualcomm.
Monitor vendor security bulletins for updates.

Long-Term Security Practices

Regularly update software and firmware to the latest versions.
Implement secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Keep abreast of security advisories and apply patches promptly.