High severity · published Oct 23, 2023
CVE-2023-5633
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…
7.8
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.1.13 before 6.1.75; 6.2 before 6.5.8; 6.6; 6.6; 6.6; 6.6; +2 more · source: NVD
CL
Codeready Linux Builder · Redhat
8.0; 9.0 · source: NVD
CL
Codeready Linux Builder Eus · Redhat
8.8; 9.2; 9.4 · source: NVD
CL
Codeready Linux Builder For Arm64 · Redhat
8.0_aarch64; 9.0_aarch64 · source: NVD
CL
Codeready Linux Builder For Arm64 Eus · Redhat
8.8_aarch64; 9.2_aarch64; 9.4_aarch64 · source: NVD
CL
Codeready Linux Builder For Ibm Z Systems · Redhat
9.0_s390x · source: NVD
CL
Codeready Linux Builder For Ibm Z Systems Eus · Redhat
9.2_s390x; 9.4_s390x · source: NVD
CL
Codeready Linux Builder For Power Little Endian · Redhat
8.0_ppc64le; 9.0_ppc64le · source: NVD
CL
Codeready Linux Builder For Power Little Endian Eus · Redhat
8.8_ppc64le; 9.2_ppc64le; 9.4_ppc64le · source: NVD
EL
Enterprise Linux · Redhat
8.0; 9.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.8; 9.2; 9.4 · source: NVD
EL
Enterprise Linux For Arm 64 · Redhat
8.0_aarch64; 9.0_aarch64 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-5633
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-5633
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0113
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0134
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0461
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:1404
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4823
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:4831
More from Kernel
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
8.8
CVE-2013-6282
Linux Kernel Improper Input Validation Vulnerability
8.4
CVE-2022-0185
Linux Kernel Heap-Based Buffer Overflow Vulnerability
8.4
CVE-2013-2094
Linux Kernel Privilege Escalation Vulnerability