CVE-2012-4221 Integer overflow in n/a

What is CVE-2012-4221?

CVE-2012-4221 is a medium-severity vulnerability in Google Android, published on 30 Nov 2012. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Integer overflow in diagchar_core.c in the Qualcomm Innovation Center (QuIC) Diagnostics (aka DIAG) kernel-mode driver for Android 2.3 through 4.2 allows attackers to execute arbitrary code or cause a denial of service via an application that uses crafted arguments in a local diagchar_ioctl call.

Weakness: CWE-189

Which versions are affected by CVE-2012-4221?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2012-4221?

No fix has been published for CVE-2012-4221 yet. Limit exposure of the affected software until one is available.

Is CVE-2012-4221 being exploited?

There is no known exploitation of CVE-2012-4221 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2g89-rc7x-f9w7.