CVE-2023-3567

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

Published Jul 24, 2023 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-44218 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.
Ubuntu USN Ubuntu USN USN-6309-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6327-1 Linux kernel (KVM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6341-1 Linux kernel vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 7, 2026, 11:32 AM
Reserved
Jul 9, 2023, 9:05 AM
Status
Modified
Published
Jul 24, 2023, 4:15 PM
Modified
Nov 7, 2026, 12:17 PM
Severity
Moderate
Public date
Jan 14, 2023, 12:00 AM