CVE record · CVE-2021-4037

Kernel: security regression for cve-2018-13405

CVSS 4.4 MediumEPSS 0.0034 · 27th percentile

Published by the CVE Program (CNA: redhat) at 24 Aug 2022, 00:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	kernel Package name: kernel https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/	affected before 5.4.241 semver affected 5.5 to before 5.10.146 semver unaffected 5.12 semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.9.1.rt7.166.el8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.9.1.el8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.49.1.rt7.121.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.49.1.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2021-4037
CNA: redhat
Weakness (CWE): CWE-284
Tags: Linux kernel
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.4 Extended Update Support
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 9
Broken access control
Published: 24 Aug 2022
Updated: 14 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.4	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0034, the 27th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 24 Aug 2022. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2022:1975 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2022:1988 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2022:4829 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2022:4835 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2021-4037 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2027239 issue-trackingredhat
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01ea173e103e
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.