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zdiRyota Shiga(@Ga_ryo_) of Flatt SecurityZDI-23-1489
HistorySep 29, 2023 - 12:00 a.m.

Linux Kernel eBPF Improper Input Validation Privilege Escalation Vulnerability

2023-09-2900:00:00
Ryota Shiga(@Ga_ryo_) of Flatt Security
www.zerodayinitiative.com
25
linux kernel
ebpf
privilege escalation
improper input validation
arbitrary code
local attackers
high-privileged code

EPSS

0.001

Percentile

17.5%

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.