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K
zdiZhenpeng Lin from Northwestern UniversityZDI-22-1117
HistoryAug 18, 2022 - 12:00 a.m.

(Pwn2Own) Linux Kernel route4_change Double Free Privilege Escalation Vulnerability

2022-08-1800:00:00
Zhenpeng Lin from Northwestern University
www.zerodayinitiative.com
68
privilege escalation
linux kernel
vulnerability
routing decisions
arbitrary code

EPSS

0.001

Percentile

21.8%

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 handling of routing decisions. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root.