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CVE-2023-5633

20
FAUCET Score

CVE-2023-5633 is a high-severity use-after-free vulnerability affecting Linux and Red Hat systems when running as a VMware guest with 3D acceleration enabled. This flaw, stemming from incomplete fixes for prior CVEs, allows a local, unprivileged user to escalate privileges. With a CVSS score of 7.8, it presents a significant risk for confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, indicating no active exploitation. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.1.13, < 6.1.75CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.5.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*
6.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 56th percentile among its peer group of 16,994 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.153.1-1 on CBL Mariner 2.0Fixed in: 5.15.153.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.15.153.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.15.153.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: kernel-0:4.18.0-477.51.1.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-362.18.1.el9_3
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-rt-0:5.14.0-284.75.1.rt14.360.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-0:5.14.0-284.75.1.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-513.11.1.rt7.313.el8_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-513.11.1.el8_9
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (3)

microsoft2023-Nov/CVE-2023-5633

CVE-2023-5633

Nov 14, 2023
microsoft2023-Oct/CVE-2023-5633Important

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

Oct 10, 2023
redhatCVE-2023-5633Important

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

Sep 28, 2023

References

access.redhat.com / errata/RHSA-2024:0113
Third Party Advisory
access.redhat.com / errata/RHSA-2024:0134
Third Party Advisory
access.redhat.com / errata/RHSA-2024:0461
Third Party Advisory
access.redhat.com / errata/RHSA-2024:1404
Third Party Advisory
access.redhat.com / errata/RHSA-2024:4823
Third Party Advisory
access.redhat.com / errata/RHSA-2024:4831
Third Party Advisory
access.redhat.com / security/cve/CVE-2023-5633
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch