CVE-2023-3567
Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-416 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Jul 24, 2023 |
| Last Updated | Nov 6, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0412 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0431 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0432 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0439 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0448 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0575 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2394 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2950 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:3138 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-3567 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2221463 spinics.net: https://www.spinics.net/lists/stable-commits/msg285184.html packetstormsecurity.com: http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html packetstormsecurity.com: http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html