CVE-2011-0227
Description
The queueing primitives in IOMobileFrameBuffer in Apple iOS before 4.2.9 and 4.3.x before 4.3.4 do not properly perform type conversion, which allows local users to gain privileges via a crafted application.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Improper type conversion in IOMobileFrameBuffer queueing primitives on iOS allows a local, crafted application to gain system privileges before versions 4.2.9 and 4.3.4.
Vulnerability
The queueing primitives in IOMobileFrameBuffer on Apple iOS contain an improper type conversion flaw. This vulnerability affects iOS versions before 4.2.9 (for iPhone 4 CDMA models) and iOS 4.3.x before 4.3.4 (for iPhone 3GS, iPhone 4 GSM, iPod touch 3rd generation and later, and iPad). The bug resides in the kernel extension responsible for frame buffer management, allowing a crafted application to trigger the type confusion.
Exploitation
An attacker must have the ability to install and run a crafted application on the device. No additional network access or user interaction beyond launching the malicious app is required. The application triggers the type conversion error in the IOMobileFrameBuffer queueing code path, potentially corrupting kernel memory.
Impact
Successful exploitation permits a local user to gain elevated privileges within the iOS kernel. This can lead to arbitrary code execution with kernel-level access, completely compromising the device's confidentiality, integrity, and availability.
Mitigation
Apple addressed this vulnerability in iOS 4.2.9 (for iPhone 4 CDMA) and iOS 4.3.4 (for other affected devices), released on July 15, 2011. Users should update their devices to these or later versions. No workaround is available for unpatched systems.
AI Insight generated on May 24, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
37cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*+ 35 more
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*range: <=4.2.8
- cpe:2.3:o:apple:iphone_os:1.0.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.3:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.4:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:1.1.5:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.0.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.1.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.1.3:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:3.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.0.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.0.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.2.5:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.3.2:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:4.3.3:*:*:*:*:*:*:*
- Range: <4.2.9, 4.3.x <4.3.4
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- lists.apple.com/archives/security-announce/2011//Jul/msg00000.htmlnvdVendor Advisory
- lists.apple.com/archives/security-announce/2011//Jul/msg00001.htmlnvdVendor Advisory
- support.apple.com/kb/HT4802nvdVendor Advisory
- support.apple.com/kb/HT4803nvdVendor Advisory
News mentions
0No linked articles in our index yet.