Double Free in Linux Kernel
CVE-2023-33952
A double-free vulnerability was found in handling vmw_buffer_object objects in the vmwgfx driver in the Linux kernel. This issue occurs due to the lack of validating the existence of an object prior to performing further free operations on the object, which may allow a local privileged user to escalate privileges and execute code in the context of the kernel.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (37.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-513.5.1.rt7.307.el8_9, 0:4.18.0-513.5.1.el8_9
- Red Hat Enterprise Linux 8.8 Extended Update Support — versions 0:4.18.0-477.51.1.el8_8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-362.8.1.el9_3
- Red Hat Enterprise Linux 9.2 Extended Update Support — versions 0:5.14.0-284.75.1.el9_2, 0:5.14.0-284.75.1.rt14.360.el9_2
- Red Hat Enterprise Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux For Real Time — versions 8.0
- Red Hat Enterprise Linux For Real Time Nfv — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:6583 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:6901 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7077 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:1404 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:4823 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:4831 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-33952 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- www.zerodayinitiative.com/advisories/ZDI-CAN-20292 (Patch, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-33952?
- CVE-2023-33952 is a medium-severity vulnerability in Linux Kernel, classified under Double Free. CVSS score: 6.7/10. Published 2023-07-24.
- How severe is CVE-2023-33952?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2023-33952 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.