CVE-2023-33952: linux linux_kernel Double Free
Vulnerability summary
CVE-2023-33952 is a medium (CVSS 6.7) Double Free vulnerability in linux linux_kernel. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 14 · Related 8Timeline
- 24-07-2023PublishedVulnerability first disclosed.
- 25-02-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
0.00 pp
From 0.46% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu51 products
- linux-allwinner-5.19< 5.19.0-1012.12~22.04.1
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19< 5.19.0-1025.26~22.04.1
Redhat3 products
Debian1 product
- linux< 6.1.15-1
Linux1 product
- linux_kernel≤ 6.3.9
4 vendors · 56 products
References
15 links- bugzilla.redhat.com/show_bug.cgi?id=2218212Issue TrackingX Refsource REDHATPatchThird Party Advisory
