CVE-2017-5123 Privilege escalation in n/a
Insufficient validation in the Linux kernel waitid syscall allows local attackers to escape sandboxes and escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-5123?
CVE-2017-5123 is a high-severity vulnerability in Linux kernel, published on 2 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient data validation in waitid allowed an user to escape sandboxes on Linux.
Weakness: CWE-20
Which versions are affected by CVE-2017-5123?
It affects 9 products.
Products include Linux kernel, Netapp Cloud Backup, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410s Firmware, Netapp H500e Firmware and 3 more.
How do I fix CVE-2017-5123?
Apply the vendor's patch.
Is CVE-2017-5123 being exploited?
There is no known exploitation of CVE-2017-5123 in the wild and no public exploit code.
Public exploit code: 2 Exploit-DB entries and 7 proofs of concept on GitHub.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2017-5123, GHSA-c436-43cf-26wj.