HOMEVULNERABILITIESCVE-2023-1838
HIGH

CVE-2023-1838

CWE-416Published: April 5, 2023· Updated: Jun 17, 2026

7.1
CVSS v3.1

Official Description

A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the system, and could even lead to a kernel information leak problem.

NVD Source

Technical Analysis

CVE-2023-1838 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.

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.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
netapp5 product(s)
h300sh410ch410sh500sh700s
Source: NVD CPE · 6 total CPE entries

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

ADVISORYhttps://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/
ADVISORYhttps://security.netapp.com/advisory/ntap-20230517-0003/
ADVISORYhttps://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/
ADVISORYhttps://security.netapp.com/advisory/ntap-20230517-0003/

All References (4)

→
https://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230517-0003/Third Party Advisory · VDB Entry
→
https://lore.kernel.org/netdev/20220516084213.26854-1-jasowang%40redhat.com/T/Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230517-0003/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2023-1838
CVSS Score7.1 / 10
SeverityHIGH
WeaknessCWE-416
CISA KEVNo
Affected2 vendor(s)
PublishedApr 5, 2023

Related CVEs (CWE-416)

CVE-2010-3116
10.0
CVE-2010-3252
10.0
CVE-2010-2300
10.0
CVE-2024-43102
10.0
CVE-2010-2302
10.0
CVE-2012-4212
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-1838 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.
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