CVE-2023-3567

Published: Jul 24, 2023

Modified: Nov 6, 2025

PUBLISHED

CVSS v3.1

7.1

HIGH

Description

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This issue may allow an attacker with local user access to cause a system crash or leak internal kernel information.

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:4.18.0-553.rt7.342.el8_10 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:4.18.0-553.el8_10 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	unaffected `0:4.18.0-372.87.1.el8_6 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected `0:4.18.0-477.43.1.el8_8 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:5.14.0-427.13.1.el9_4 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:5.14.0-427.13.1.el9_4 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected `0:5.14.0-70.85.1.el9_0 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected `0:5.14.0-70.85.1.rt21.156.el9_0 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	unaffected `0:5.14.0-284.48.1.el9_2 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	unaffected `0:5.14.0-284.48.1.rt14.333.el9_2 - < *`
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8	unaffected `0:4.18.0-372.87.1.el8_6 - < *`
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 7	All versions
Red Hat	Red Hat Enterprise Linux 7	All versions
Red Hat	Red Hat Enterprise Linux 9	All versions