CVE-2021-38198 Privilege escalation in n/a
A flaw in Linux kernel KVM shadow page permission computation allows guest users to bypass protection checks, potentially leading to 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-2021-38198?
CVE-2021-38198 is a medium-severity vulnerability in Debian Debian Linux, published on 8 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.
Which versions are affected by CVE-2021-38198?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2021-38198?
Apply the vendor's patch.
Is CVE-2021-38198 being exploited?
There is no known exploitation of CVE-2021-38198 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-6582, DEBIAN-CVE-2021-38198, GHSA-4wvg-hh97-h3gv, OESA-2021-1331, UBUNTU-CVE-2021-38198.