CVE-2021-26934 Misconfiguration in n/a

High 7.8 Published Updated

The Linux kernel DRM Xen frontend driver allowed an unsupported backend allocation mode due to incorrect support status documentation.

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-2021-26934?

CVE-2021-26934 is a high-severity vulnerability in Fedoraproject Fedora, published on 17 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel 4.18 through 5.10.16, as used by Xen. The backend allocation (aka be-alloc) mode of the drm_xen_front drivers was not meant to be a supported configuration, but this wasn't stated accordingly in its support status entry.

Which versions are affected by CVE-2021-26934?

It affects 2 products.

Products include Fedoraproject Fedora, Linux kernel.

How do I fix CVE-2021-26934?

Apply the vendor's patch.

Is CVE-2021-26934 being exploited?

There is no known exploitation of CVE-2021-26934 in the wild and no public exploit code.

All Fedoraproject Fedora vulnerabilities

Sources

Also known as DEBIAN-CVE-2021-26934, GHSA-55gv-57w2-69r9, ROOT-OS-DEBIAN-11-CVE-2021-26934, ROOT-OS-DEBIAN-12-CVE-2021-26934, ROOT-OS-DEBIAN-13-CVE-2021-26934, ROOT-OS-UBUNTU-2204-CVE-2021-26934 and 2 more.

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