CVE-2021-3947 Information disclosure in QEMU
A stack-buffer-overflow in QEMU's NVMe component allows a malicious guest to read out-of-bounds memory, leading to sensitive information disclosure.
- 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-2021-3947?
CVE-2021-3947 is a medium-severity vulnerability in Qemu Qemu, published on 18 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Weakness: CWE-125
Which versions are affected by CVE-2021-3947?
It affects 1 product.
Products include Qemu Qemu.
How do I fix CVE-2021-3947?
Apply the vendor's patch.
Is CVE-2021-3947 being exploited?
There is no known exploitation of CVE-2021-3947 in the wild and no public exploit code.
Other vulnerabilities in Qemu Qemu
Sources
Also known as AZL-8672, DEBIAN-CVE-2021-3947, GHSA-435p-4r6f-2842, UBUNTU-CVE-2021-3947.