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CVE-2023-5633— Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vmwgfx中引用计数问题，导致释放后重用，攻击者利用该漏洞可以升级其权限。

CVSS 7.8 · High EPSS 0.28% · P19

Possible ATT&CK Techniques 2 AI

T1203.002 T1068.003
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I. Basic Information for CVE-2023-5633

Vulnerability Information
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Vulnerability Title
Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
引用计数的更新不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vmwgfx中引用计数问题，导致释放后重用，攻击者利用该漏洞可以升级其权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 8 0:4.18.0-513.11.1.rt7.313.el8_9 ~ * cpe:/a:redhat:enterprise_linux:8::realtime
Red Hat Red Hat Enterprise Linux 8 0:4.18.0-513.11.1.el8_9 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support 0:4.18.0-477.51.1.el8_8 ~ * cpe:/a:redhat:rhel_eus:8.8::crb
Red Hat Red Hat Enterprise Linux 9 0:5.14.0-362.18.1.el9_3 ~ * cpe:/a:redhat:enterprise_linux:9::crb
Red Hat Red Hat Enterprise Linux 9 0:5.14.0-362.18.1.el9_3 ~ * cpe:/a:redhat:enterprise_linux:9::crb
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.75.1.el9_2 ~ * cpe:/a:redhat:rhel_eus:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.75.1.rt14.360.el9_2 ~ * cpe:/a:redhat:rhel_eus:9.2::realtime
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-5633

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III. Intelligence Information for CVE-2023-5633

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Vendor Advisories for CVE-2023-5633 (7)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-911

V. Comments for CVE-2023-5633

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