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
Published Nov 30, 2012
6.8
MEDIUMCVSS 2.0
EPSS 2.06%
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.
Affected products
No data.
- 2.3
- 2.3
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 3.0
- 3.1
- 3.2
- 3.2.1
- 3.2.2
- 3.2.4
- 3.2.6
- 4.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.1
- 4.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2 as they did not provide support for the Diagnostics (DIAG) kernel mode driver for Android.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.06% (0.02063) | 80.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.06% (0.02063) | 78.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.27% (0.00273) | 48.73th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00099) | 42.80th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00099) | 41.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00099) | 39.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.42% (0.02424) | 81.55th | v2 (v2022.01.01) |
| Feb 14, 2023 | 2.42% (0.02424) | 81.06th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.72% (0.02720) | 81.19th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.72% (0.02720) | 62.69th | v2 (v2022.01.01) |
References (5)
- http://www.kb.cert.org/vuls/id/702452 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- https://access.redhat.com/security/cve/CVE-2012-4221 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-4221
- https://www.codeaurora.org/projects/security-advisories/multiple-issues-diagkgsl-system-call-handling-cve-2012-4220-cve-2012 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2012-4221
| Link | Providers | Tags |
|---|---|---|
| http://www.kb.cert.org/vuls/id/702452 | third-party-advisoryx_refsource_CERT-VNUS Government Resource | |
| https://access.redhat.com/security/cve/CVE-2012-4221 | Vendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-4221 | ||
| https://www.codeaurora.org/projects/security-advisories/multiple-issues-diagkgsl-system-call-handling-cve-2012-4220-cve-2012 | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2012-4221 |
Change history (0)
No recorded changes yet.