Kernel Driver | Breaking Cybersecurity News | The Hacker News

1 Introduction This article provides a technical analysis of how many Windows kernel mode drivers can be interacted with from user mode without the hardware they were developed for. This work was motivated by driver-oriented vulnerability research and the need to evaluate the exploitability of individual findings, which frequently affect code whose reachability is hardware-gated. The methodology presented here should help anyone determine whether a particular Windows kernel mode driver vulnerability remains reachable - and thus potentially exploitable - even in the absence of the hardware the driver was developed for. The reader is expected to have basic Windows driver knowledge, especially regarding device objects. The rest of this article is written with the assumption that the reader is already familiar with the concepts described in the introduction article: Anatomy of Access: Windows Device Objects from a Security Perspective . Just like the introduction article, this resou...

A set of five medium-severity security flaws in Arm's Mali GPU driver has continued to remain unpatched on Android devices for months, despite fixes released by the chipmaker. Google Project Zero, which discovered and reported the bugs, said Arm addressed the shortcomings in July and August 2022. "These fixes have not yet made it downstream to affected Android devices (including Pixel, Samsung, Xiaomi, Oppo, and others)," Project Zero researcher Ian Beer  said  in a report. "Devices with a Mali GPU are currently vulnerable." The vulnerabilities, collectively tracked under the identifiers  CVE-2022-33917  (CVSS score: 5.5) and  CVE-2022-36449  (CVSS score: 6.5), concern a case of improper memory processing, thereby allowing a non-privileged user to gain access to freed memory. The second flaw, CVE-2022-36449, can be further weaponized to write outside of buffer bounds and disclose details of memory mappings, according to an  advisory  issued ...