HOMEVULNERABILITIESCVE-2023-32257
HIGH

CVE-2023-32257

CWE-362Published: July 24, 2023· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

NVD Source

Technical Analysis

CVE-2023-32257 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
netapp5 product(s)
solidfire \& hci storage nodeh300sh410sh500sh700s
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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=2219806
PATCHhttps://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=2219806
PATCHhttps://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/
ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-32257
ADVISORYhttps://security.netapp.com/advisory/ntap-20230915-0011/
ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-32257
ADVISORYhttps://security.netapp.com/advisory/ntap-20230915-0011/

All References (8)

→
https://access.redhat.com/security/cve/CVE-2023-32257Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2219806Issue Tracking · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230915-0011/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/Patch · Third Party Advisory · VDB Entry
→
https://access.redhat.com/security/cve/CVE-2023-32257Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2219806Issue Tracking · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230915-0011/Third Party Advisory · VDB Entry
→
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/Patch · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2023-32257
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-362
CISA KEVNo
Affected2 vendor(s)
PublishedJul 24, 2023

Related CVEs (CWE-362)

CVE-2014-0703
10.0
CVE-2015-8556
10.0
CVE-2010-1228
10.0
CVE-2008-6598
10.0
CVE-2020-1660
9.9
CVE-2021-41025
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-32257 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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