CVE-2023-3567
highA use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel.
Vendor / product: Linux — linux kernel
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.
CVSS
7.1
7.1 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-07-24 16:15
Modified: 2026-11-07 12:17
NVD status: Modified
Last synced 4 days ago
Verified against the source API 2026-11-07 12:18 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel <6.2.0, 6.2.0
redhat / enterprise_linux 8.0, 9.0
canonical / ubuntu_linux 14.04, 16.04, 18.04, 20.04, 22.04
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://www.spinics.net/lists/stable-commits/msg285184.html
Patch / mitigation: https://www.spinics.net/lists/stable-commits/msg285184.html
References
- https://access.redhat.com/errata/RHSA-2024:0412 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0431 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0432 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0439 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0448 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:0575 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2394 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:2950 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2024:3138 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2023-3567 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2221463 secalert@redhat.com
- https://www.spinics.net/lists/stable-commits/msg285184.html secalert@redhat.com
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.h... af854a3a-2127-422b-91ae-364da2661108
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.h... af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0412 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0431 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0432 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0439 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0448 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:0575 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:2394 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:2950 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2024:3138 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/security/cve/CVE-2023-3567 af854a3a-2127-422b-91ae-364da2661108
- https://bugzilla.redhat.com/show_bug.cgi?id=2221463 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-07 12:18 UTC · record ↗