CVE-2021-32844 Null dereference in hyperkit
A null pointer dereference in HyperKit allows a guest to crash the host, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32844?
CVE-2021-32844 is a medium-severity vulnerability in moby hyperkit, published on 17 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, ` vi_pci_write` has is a call to `vc_cfgwrite` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit 451558fe8aaa8b24e02e34106e3bb9fe41d7ad13.
Weakness: CWE-476
Which versions are affected by CVE-2021-32844?
It affects 1 product.
Products include Mobyproject Hyperkit.
How do I fix CVE-2021-32844?
No fix has been published for CVE-2021-32844 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-32844 being exploited?
There is no known exploitation of CVE-2021-32844 in the wild and no public exploit code.
Other vulnerabilities in moby hyperkit
Sources
Also known as GHSA-gpp4-r7hj-jx6g.