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CVE-2023-5633

high

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 wh…

Vendor / product: Linux — linux kernel

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.

CVSS
7.8
7.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-10-23 22:15
Modified: 2026-11-04 21:17
NVD status: Modified
Last synced 3 hours ago
Verified against the source API 2026-11-04 21:37 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 ≥6.1.13 <6.1.75, ≥6.2 <6.5.8, 6.6
redhat / codeready_linux_builder 8.0, 9.0
redhat / codeready_linux_builder_eus 8.8, 9.2, 9.4
redhat / codeready_linux_builder_for_arm64 8.0_aarch64, 9.0_aarch64
redhat / codeready_linux_builder_for_arm64_eus 8.8_aarch64, 9.2_aarch64, 9.4_aarch64
redhat / codeready_linux_builder_for_ibm_z_systems 9.0_s390x
redhat / codeready_linux_builder_for_ibm_z_systems_eus 9.2_s390x, 9.4_s390x
redhat / codeready_linux_builder_for_power_little_endian 8.0_ppc64le, 9.0_ppc64le
redhat / codeready_linux_builder_for_power_little_endian_eus 8.8_ppc64le, 9.2_ppc64le, 9.4_ppc64le
redhat / enterprise_linux 8.0, 9.0
redhat / enterprise_linux_eus 8.8, 9.2, 9.4
redhat / enterprise_linux_for_arm_64 8.0_aarch64, 9.0_aarch64
redhat / enterprise_linux_for_arm_64_eus 8.8_aarch64, 9.2_aarch64, 9.4_aarch64
redhat / enterprise_linux_for_ibm_z_systems 8.0_s390x, 9.0_s390x
redhat / enterprise_linux_for_ibm_z_systems_eus 8.8_s390x, 9.2_s390x, 9.4_s390x
redhat / enterprise_linux_for_power_little_endian 8.0_ppc64le, 9.0_ppc64le
redhat / enterprise_linux_for_power_little_endian_eus 9.2_ppc64le, 9.4_ppc64le
redhat / enterprise_linux_for_real_time 8.0, 9.0
redhat / enterprise_linux_for_real_time_for_nfv 8.0, 9.0
redhat / enterprise_linux_server_aus 9.2, 9.4
redhat / enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.8, 9.2_ppc64le
redhat / enterprise_linux_server_tus 8.8

Weakness classification (CWE)

CWE-911 CWE-416

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2245663
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2245663

References

Data sources

NVD CVE API 2.0 — fetched 2026-11-04 21:37 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores

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