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zdiAyaz Mammadov (McYoloSwagHam)ZDI-23-439
HistoryApr 13, 2023 - 12:00 a.m.

Linux Kernel RxRPC Race Condition Privilege Escalation Vulnerability

2023-04-1300:00:00
Ayaz Mammadov (McYoloSwagHam)
www.zerodayinitiative.com
24
local attacker
privilege escalation
linux kernel
rxrpc bundles
object locking

0.0005 Low

EPSS

Percentile

17.3%

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 processing of RxRPC bundles. 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.