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

7.1 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-3567

Check My Exposure

Credits & Attribution

No credits recorded in the NVD database.

References

More from Red Hat

View All →

CVE-2025-9909

Aap-gateway: improper path validation in gateway allows credential exfiltration

Medium 6.7

CVE-2025-9908

Event-driven-ansible: sensitive internal headers disclosure in aap eda event streams

Medium 6.7

CVE-2025-9907

Event-driven-ansible: event stream test mode exposes sensitive headers in aap eda

Medium 6.7

CVE-2025-9901

Libsoup: improper handling of http vary header in libsoup caching

Medium 5.9

CVE-2025-9820

Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function

Medium 4

Affected Vendor

Red Hat

View all reports →

Affected Software

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, Red Hat Enterprise Linux 7

Vulnerable Versions:

0:4.18.0-553.rt7.342.el8_10, 0:4.18.0-553.el8_10, 0:4.18.0-372.87.1.el8_6, 0:4.18.0-477.43.1.el8_8, 0:5.14.0-427.13.1.el9_4, 0:5.14.0-70.85.1.el9_0, 0:5.14.0-70.85.1.rt21.156.el9_0, 0:5.14.0-284.48.1.el9_2, 0:5.14.0-284.48.1.rt14.333.el9_2