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CVE-2023-5633

Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling

Published: 10/23/2023 Last updated: 2/25/2026 Reserved: 10/18/2023

The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.

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

Metrics

Version Score Severity Vector String
3.1 7.8 High CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted 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 (7)

Product Vendor Version
Red Hat Enterprise Linux 8 Red Hat <= 5.15.*
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat <= 5.10.*
Red Hat Enterprise Linux 9 Red Hat 8d924b262f3178a9b17c17d4306a9f426c508bd9
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat <= 5.16.*
Red Hat Enterprise Linux 6 Red Hat <= 5.15.*
Red Hat Enterprise Linux 7 Red Hat <= 5.17.*
Red Hat Enterprise Linux 9 Red Hat <= 5.16.*

References (32)

Credits (2)