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zdiRyota Shiga(@Ga_ryo_) of Flatt SecurityZDI-20-1372
HistoryNov 22, 2020 - 12:00 a.m.

Linux Kernel Performance Counters Race Condition Privilege Escalation Vulnerability

2020-11-2200:00:00
Ryota Shiga(@Ga_ryo_) of Flatt Security
www.zerodayinitiative.com
26

0.001 Low

EPSS

Percentile

39.5%

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.