Google released an important security update on February 1st, addressing 13 critical vulnerabilities in the Android platform. Out of these, seven were classified as "Critical," meaning they pose a high risk if exploited. Three of the issues are related to Wi-Fi drivers, while the remaining four affect components like Mediaserver, Qualcomm Performance Module, and the Debugger Daemon.
Among the Wi-Fi-related vulnerabilities, two are found in Broadcom's driver and could allow remote code execution if an attacker sends a malicious wireless control packet. These vulnerabilities are particularly dangerous because they can be triggered without user interaction, making them highly exploitable when the device is connected to the same network. Another vulnerability exists in Qualcomm’s Wi-Fi driver, which allows for privilege escalation. However, not all Wi-Fi-related issues were labeled as "Critical" — one was considered less severe.
The most serious flaw, according to Google, is located in the Mediaserver component. This vulnerability could be triggered through media files such as emails, web browsing, or multimedia messages, potentially leading to remote code execution. Fortunately, no known attacks have been reported so far.
Google has already rolled out automatic updates to Nexus devices and made the updated firmware available on the Google Developer website. The patches are included in builds LMY49G and Android M with a Security Patch Level of February 1, 2016. The source code will be submitted to the Android Open Source Project (AOSP) within the next two days.
Starting with Android 6.0 Marshmallow, Google introduced a "Security Patch Level" indicator to help users track the latest security updates. Users can check this information under the "About Phone" section in their device settings. It's always a good idea to keep your device up-to-date to protect against potential threats.
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