CVE - CVE-2020-27777

CVE-ID
CVE-2020-27777	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1900844 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1900844 MISC:https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764 URL:https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764 MISC:https://www.openwall.com/lists/oss-security/2020/10/09/1 URL:https://www.openwall.com/lists/oss-security/2020/10/09/1 MISC:https://www.openwall.com/lists/oss-security/2020/11/23/2 URL:https://www.openwall.com/lists/oss-security/2020/11/23/2
Assigning CNA
Red Hat, Inc.
Date Record Created
20201027	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201027)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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