MEDIUM
CVE-2023-33250
CWE-416Published: May 21, 2023· Updated: Jun 17, 2026
4.4
CVSS v3.1
Official Description
The Linux kernel 6.3 has a use-after-free in iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c.
Technical Analysis
CVE-2023-33250 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.4.
From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
https://groups.google.com/g/syzkaller/c/G6P9yecsTZ8/m/iiqFVOM9BwAJMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230622-0006/Third Party Advisory
→
https://groups.google.com/g/syzkaller/c/G6P9yecsTZ8/m/iiqFVOM9BwAJMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230622-0006/Third Party Advisory
Quick Facts
CVE IDCVE-2023-33250
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-416
CISA KEVNo
Affected2 vendor(s)
PublishedMay 21, 2023
Related CVEs (CWE-416)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-33250 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.