HOMEVULNERABILITIESCVE-2023-38429
CRITICAL

CVE-2023-38429

CWE-193Published: July 18, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in memory allocation (because of ksmbd_smb2_check_message) that may lead to out-of-bounds access.

NVD Source

Technical Analysis

CVE-2023-38429 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 9.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

Linux1 product(s)
linux kernel
Source: NVD CPE · 1 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=443d61d1fa9faa60ef925513d83742902390100f
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=443d61d1fa9faa60ef925513d83742902390100f

All References (5)

→
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4Release Notes
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=443d61d1fa9faa60ef925513d83742902390100fPatch
→
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4Release Notes
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=443d61d1fa9faa60ef925513d83742902390100fPatch
→
https://security.netapp.com/advisory/ntap-20250103-0009/

Quick Facts

CVE IDCVE-2023-38429
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-193
CISA KEVNo
Affected1 vendor(s)
PublishedJul 18, 2023

Related CVEs (CWE-193)

CVE-2025-54349
10.0
CVE-2024-10442
10.0
CVE-2018-14599
9.8
CVE-2022-34970
9.8
CVE-2024-38441
9.8
CVE-2018-8828
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-38429 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.COM. CVE data is provided under the NVD usage policy.
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