What is RHSA-2021:4871?

RHSA-2021:4871 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel security and bug fix update

Which CVE IDs does RHSA-2021:4871 cover?

RHSA-2021:4871 covers the following CVE IDs: CVE-2020-36385, CVE-2021-20317. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:4871?

RHSA-2021:4871 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2021:4871HighCVSS 7.8

Red Hat Security Advisory: kernel security and bug fix update

Vendor

Red Hat Product Security

Published

November 30, 2021

Last Modified

June 25, 2026

🔗 CVE IDs covered (2)

CVE-2020-36385 →CVE-2021-20317 →

📋 Description

CVE-2020-36385 — kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free CVE-2021-20317 — kernel: timer tree corruption leads to missing wakeup and system freeze

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2021:4871
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=1974319
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2005258
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4871.json