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.
CVE-2023-5633
CVSS base score
7.8 (v3.1)
Severity
HIGH
Attack vector
Local
Weakness
CWE-911, CWE-416
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
linux linux kernel
redhat codeready linux builder
redhat codeready linux builder eus
redhat codeready linux builder for arm64
redhat codeready linux builder for arm64 eus
redhat codeready linux builder for ibm z systems
redhat codeready linux builder for ibm z systems eus
redhat codeready linux builder for power little endian
redhat codeready linux builder for power little endian eus
redhat enterprise linux
References
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- bugzilla.redhat.com Issue Tracking, Patch
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory