CVE-2020-10942 Memory corruption in n/a
Attackers can trigger kernel stack corruption via crafted system calls due to missing validation in the vhost net driver, potentially leading to code execution or privilege escalation.
- 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-2020-10942?
CVE-2020-10942 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 24 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family field, which might allow attackers to trigger kernel stack corruption via crafted system calls.
Weakness: CWE-787
Which versions are affected by CVE-2020-10942?
It affects 4 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Opensuse Leap.
How do I fix CVE-2020-10942?
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-2020-10942 being exploited?
There is no known exploitation of CVE-2020-10942 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2020-10942, GHSA-m7p8-8c8g-qwrv, UBUNTU-CVE-2020-10942.