What is CVE-2023-38428?

CVE-2023-38428 is a critical-severity vulnerability in Linux Linux_kernel, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2023-07-18.

How severe is CVE-2023-38428?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2023-38428 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Linux Linux_kernel

CVE-2023-38428

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.

Vulnerability class: Buffer Overflow

EPSS: 0.030 (85.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

cve@mitre.org (Release Notes)
cve@mitre.org (Patch)
cve@mitre.org (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2023-38428?: CVE-2023-38428 is a critical-severity vulnerability in Linux Linux_kernel, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2023-07-18.
How severe is CVE-2023-38428?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2023-38428 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.