CVE-2022-23084 Potential jail escape vulnerabilities in netmap
A time-of-check to time-of-use bug in netmap allows privileged jail processes to corrupt kernel memory and escape to the host.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23084?
CVE-2022-23084 is a high-severity vulnerability in Freebsd Freebsd, published on 15 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The total size of the user-provided nmreq to nmreq_copyin() was first computed and then trusted during the copyin. This time-of-check to time-of-use bug could lead to kernel memory corruption.
On systems configured to include netmap in their devfs_ruleset, a privileged process running in a jail can affect the host environment.
Weakness: CWE-367
Which versions are affected by CVE-2022-23084?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2022-23084?
No fix has been published for CVE-2022-23084 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-23084 being exploited?
There is no known exploitation of CVE-2022-23084 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-qg2q-3q8w-8v7r.