What is CVE-2023-38427?

CVE-2023-38427 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2023-38427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-38427?

CVE-2023-38427 has a CVSS score of 9.8 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-38427?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-38427 patch availability.

Is CVE-2023-38427 actively exploited?

CVE-2023-38427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2023-38427

Critical

An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/smb2pdu.c in ksmbd has an integer underflow and out-of-bounds read in deassemble_neg_contexts.

Package Linux Kernel

Published 2023-07-18

Last modified 2025-05-05

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

9.8

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-125

CVE-2023-38427 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

3 total

Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=f1a411873c85b642f13b01f21b534c2bab81fc1b

Patch
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8

Release Notes
Security
https://security.netapp.com/advisory/ntap-20230824-0011/

Third Party Advisory

Details

CVE ID CVE-2023-38427

Severity Critical

CVSS score 9.8 / 10

CVSS version 3.1

Published 2023-07-18

Modified 2025-05-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-38427?

CVE-2023-38427 is a Critical severity Linux kernel vulnerability with a CVSS score of 9.8 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2023-38427 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-38427?

CVE-2023-38427 has a CVSS score of 9.8 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-38427?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-38427 patch availability.
Is CVE-2023-38427 actively exploited?

No. CVE-2023-38427 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.