CVE-2023-38429

Name: CVE-2023-38429
Creator: NVD / NIST
Published: 2023-07-18T00:15:09.62+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.08%

Last modified Jun 17, 2026

CVE-2023-38429 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.08%

60.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-193

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 5.15, < 5.15.113
Linux	Linux Kernel	>= 5.16, < 6.1.30
Linux	Linux Kernel	>= 6.2, < 6.3.4

References

Timeline

Published: Jul 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-38429?

How severe is CVE-2023-38429?

CVE-2023-38429 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2023-38429?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-38429?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST