What is RHSA-2021:4648?

RHSA-2021:4648 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel-rt security and bug fix update

Which CVE IDs does RHSA-2021:4648 cover?

RHSA-2021:4648 covers the following CVE IDs: CVE-2021-20317, CVE-2021-28950, CVE-2021-43267. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:4648?

RHSA-2021:4648 has a CVSS v3 base score of 8.8, published by Red Hat Product Security.

RHSA-2021:4648HighCVSS 8.8

Red Hat Security Advisory: kernel-rt security and bug fix update

Vendor

Red Hat Product Security

Published

November 15, 2021

Last Modified

June 25, 2026

🔗 CVE IDs covered (3)

CVE-2021-20317 →CVE-2021-28950 →CVE-2021-43267 →

📋 Description

CVE-2021-20317 — kernel: timer tree corruption leads to missing wakeup and system freeze CVE-2021-28950 — kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode CVE-2021-43267 — kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2021:4648
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1941762
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2005258
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2020362
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4648.json