CVE-2021-45464 Memory corruption in n/a
A guest OS user can execute arbitrary code on the host via an out-of-bounds write in kvmtool, requiring a patch to mitigate.
- 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-2021-45464?
CVE-2021-45464 is a high-severity memory corruption vulnerability in n/a, published on 15 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine.
Weakness: CWE-787
Which versions are affected by CVE-2021-45464?
It affects 1 product.
Products include Kvmtool Project Kvmtool.
How do I fix CVE-2021-45464?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-45464 being exploited?
There is no known exploitation of CVE-2021-45464 in the wild and no public exploit code.
Sources
Also known as GHSA-42pc-9g8v-prfm, UBUNTU-CVE-2021-45464.