Disclosure Date 2020/11/10


Linux Kernel Performance Counters Race Condition Privilege Escalation Vulnerability

Linux Kernelのパフォーマンスカウンターにおける競合状態による権限昇格の脆弱性


This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the implementation of performance counters. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. https://www.zerodayinitiative.com/advisories/ZDI-20-1372/