There are new Android security patches that fix critical bugs, Google officials said.
The security patches resolve 55 vulnerabilities in Android: 8 rated critical, 30 high risk, and 17 moderate.
Most of the bugs could result in elevation of privilege on the affected devices. The fixes also took care of remote code execution flaws, along with information disclosure and denial of service issues.
Google changed things up a bit as there were three versions of the September 2016 Android Security Bulletin.
One was the 2016-09-01 security patch level, addressing platform-wide issues, the second was the 2016-09-05 security patch level, which fixed bugs in drivers, OEM-related software, and kernel subsystems, and the third was the 2016-09-06 security patch level, which takes care of two QuadRooter vulnerabilities.
The 2016-09-01 security patch level resolved two critical remote code execution flaws (RCE) in LibUtils and Mediaserver (CVE-2016-3861 and CVE-2016-3862), and a high risk RCE in MediaMuxer. It also patched three high risk elevation of privilege (EoP) and five denial of service (DoS) issues in Mediaserver, along with two EoP bugs in device boot and settings.
Of the moderate vulnerabilities, eight were EoP issues, System UI, three were information disclosure bugs, and one is a DoS flaw in Telephony. Some of these issues don’t affect Nexus devices on Android 7.0 with all available updates installed, Google officials said in a post.
The 2016-09-05 security patch level addressed multiple EoP vulnerabilities, including five critical holes, and 14 rated high risk. Other high risk bugs were three DoS issues in kernel networking subsystem and kernel ext4 file system, along with “Vulnerabilities in Qualcomm components.” The security update also fixed four moderate risk information disclosure bugs in Qualcomm SPMI driver, Qualcomm sound codec, Qualcomm DMA component, and kernel networking subsystem, along with a DoS vulnerability in kernel networking subsystem.
The third part of the Security Bulletin, the 2016-09-06 security patch level, patched QuadRooter bugs. These holes affected over 900 million Android devices that use Qualcomm chipsets. Google’s security patches fix two of the four bugs, CVE-2016-5340, a critical EoP in kernel shared memory subsystem, and CVE-2016-2059, a high risk EoP in Qualcomm networking component.