What is RHSA-2021:3766?

RHSA-2021:3766 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel security update

Which CVE IDs does RHSA-2021:3766 cover?

RHSA-2021:3766 covers the following CVE IDs: CVE-2021-22543, CVE-2021-37576. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:3766?

RHSA-2021:3766 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2021:3766HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Vendor

Red Hat Product Security

Published

October 12, 2021

Last Modified

June 25, 2026

🔗 CVE IDs covered (2)

CVE-2021-22543 →CVE-2021-37576 →

📋 Description

CVE-2021-22543 — kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks CVE-2021-37576 — kernel: powerpc: KVM guest OS users can cause host OS memory corruption

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2021:3766
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1965461
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1986506
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_3766.json