DEBIAN-CVE-2020-27777

DEBIAN-CVE-2020-27777 PUBLISHED CVSS 6.699999809265137 MEDIUM

A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.

Risk Scores

CVSS 3.1

6.699999809265137

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions
Debian:12	linux	0, 0, 0
Debian:14	linux	0, 0, 0
Debian:11	linux	0, 0, 0
Debian:13	linux	0, 0, 0

Timeline

Dec 15, 2020 CVE Published
Apr 28, 2026 CVE Updated

References

https://security-tracker.debian.org/tracker/CVE-2020-27777 advisory

Open in Interactive Console →