CVE-2020-10751 Security feature bypass in kernel
Attackers can bypass SELinux security checks by sending multiple netlink messages in a single packet, allowing unauthorized access to protected resources.
- 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-2020-10751?
CVE-2020-10751 is a medium-severity vulnerability in Redhat Enterprise Linux Server, published on 26 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing.
Which versions are affected by CVE-2020-10751?
It affects 2 products.
Products include Kernel Selinux, Redhat Enterprise Linux Server.
How do I fix CVE-2020-10751?
Upgrade to a fixed version.
Is CVE-2020-10751 being exploited?
There is no known exploitation of CVE-2020-10751 in the wild and no public exploit code.
Sources
Also known as CVE-2020-0255, DEBIAN-CVE-2020-10751, GHSA-4gwr-f7fq-56wc, UBUNTU-CVE-2020-10751.