CVE record · CVE-2023-3567

Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

CVSS 7.1 HighEPSS 0.0042 · 36th percentile

Published by the CVE Program (CNA: redhat) at 24 Jul 2023, 15:19 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
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-553.rt7.342.el8_10 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 0:4.18.0-553.el8_10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.87.1.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-477.43.1.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-427.13.1.el9_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-427.13.1.el9_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-70.85.1.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-70.85.1.rt21.156.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.48.1.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.48.1.rt14.333.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.87.1.el8_6 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: unknown
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2023-3567
CNA: redhat
Weakness (CWE): CWE-416
Tags: Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.6 Extended Update Support
Red Hat Enterprise Linux 8.8 Extended Update Support
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.0 Extended Update Support
Red Hat Enterprise Linux 9.2 Extended Update Support
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 6
Memory corruption
Published: 24 Jul 2023
Updated: 6 Nov 2025

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
7.1	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0042, the 36th percentile, on 5 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 Jul 2023. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2024:0412 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0431 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0432 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0439 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0448 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0575 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:2394 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:2950 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:3138 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2023-3567 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2221463 issue-trackingredhat
www.spinics.net/lists/stable-commits/msg285184.html

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.