CVE-2012-4220

medium

Published 2012-11-30 · Modified 2026-04-29

CVSS v3

—

CVSS v2

6.8

VIR risk

6.8

Description

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 (incorrect pointer dereference) via an application that uses crafted arguments in a local diagchar_ioctl call.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-4220

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`0`
debian	bullseye	fixed	`0`
debian	forky	fixed	`0`
debian	sid	fixed	`0`
debian	trixie	fixed	`0`

References

http://www.kb.cert.org/vuls/id/702452
https://www.codeaurora.org/projects/security-advisories/multiple-issues-diagkgsl-system-call-handling-cve-2012-4220-cve-2012
https://security-tracker.debian.org/tracker/CVE-2012-4220

Verify integrity in audit chain (admin only). AS-IS.