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CVE-2023-3567

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

Published: 7/24/2023 Last updated: 11/6/2025 Reserved: 7/9/2023

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.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7.1 High CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Opam packages affected (27)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes orun rawlink rawlink-eio rawlink-lwt shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (27)

Product Vendor Version
Red Hat Enterprise Linux 9 Red Hat <= 5.12.*
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat n/a
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat 15.0(2)EX11
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat QCA9379
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat 15.2(3)GC
Red Hat Enterprise Linux 6 Red Hat < 1.0.1
Red Hat Enterprise Linux 8 Red Hat <= 11.2
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat QCA9888
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat QCA9377
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat QCN5022
Red Hat Enterprise Linux 6 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat QCN5024
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat < 6.3.9600.20069
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat < 4.2.04.27
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat 15.2(4)M6
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat See HP Security Bulletin reference for affected versions.
Red Hat Enterprise Linux 9 Red Hat 12.2(33)SCG2
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat n/a
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat QCA9889
Red Hat Enterprise Linux 7 Red Hat < publication
Red Hat Enterprise Linux 9 Red Hat QCN5052
Red Hat Enterprise Linux 8 Red Hat < v2.5.4.1
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat < 1.0.2
Red Hat Enterprise Linux 8 Red Hat < publication

References (52)