CVE-2023-3567 HIGH

CVE-2023-3567: Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-416
Published July 24, 2023
Last update November 6, 2025
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 24, 2023 CVE published
November 6, 2025 Record updated