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CVE Record

CVE-2012-4221: Integer overflow in diagchar_core.c in the Qualcomm Innovation Center (QuIC) Diagnostics (aka DIAG) kernel-...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is a legacy Android kernel-driver flaw in Qualcomm’s DIAG diagnostics component. A malicious local app could pass crafted data to the driver and potentially execute code or crash the device. The source bundle does not show current exploitation or a named patch. Exposure is most likely on old Android 2.3 through 4.2 devices using the affected Qualcomm DIAG kernel-mode driver. The bundle does not identify specific device models, carriers, firmware builds, or modern Android impact. Prioritize this for legacy mobile asset cleanup rather than emergency incident response, unless affected devices are still deployed in sensitive workflows. Unsupported Android devices should be removed or tightly isolated because the issue can affect device integrity and availability. Mitigation focus: Inventory Android 2.3 through 4.2 devices and Qualcomm-based legacy handsets.; Check OEM, carrier, Qualcomm, and Android firmware guidance for applicable fixes.; Apply available firmware or OS updates from the device vendor..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2012-4221 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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