ZDI-21-101: Linux Kernel eBPF Improper Input Validation Privilege Escalation Vulnerability
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 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 code in the context of the kernel.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-21-101?
ZDI-21-101 has a high severity rating due to its potential to allow local privilege escalation.
How do I fix ZDI-21-101?
To fix ZDI-21-101, update the Linux Kernel to the latest patched version provided by your distribution.
Which versions of Linux Kernel are affected by ZDI-21-101?
ZDI-21-101 affects multiple versions of the Linux Kernel, including those used in Red Hat Kernel-devel.
Who can exploit ZDI-21-101?
ZDI-21-101 can be exploited by local attackers who have already gained the ability to run low-privileged code.
What is the potential impact of ZDI-21-101?
The potential impact of ZDI-21-101 is the unauthorized escalation of privileges, which can lead to further system compromise.