CVE-2020-27777
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-27777
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-27777.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-27777
- Related
- Published
- 2020-12-15T17:15:14Z
- Modified
- 2024-09-11T02:00:05Z
- Severity
-
- 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764
- https://www.openwall.com/lists/oss-security/2020/10/09/1
- https://www.openwall.com/lists/oss-security/2020/11/23/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1900844
- https://security-tracker.debian.org/tracker/CVE-2020-27777
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source