Review reviewHigh

CVE-2023-3867

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out of bounds read in smb2_sess_setup ksmbd does not consider the case of that smb2 session setup is in compound request. If this is the second payload of the compound, OOB read issue occurs while processing the first payload in the smb2_sess_setup().

CVSS: 7.1
EPSS: -
CISA KEV: Not listed
Published: 2025.08.16

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.1

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 676392184785ace61e939831e7ca44a03d438c3b, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < ef572ffa8eb44111eed2925fbb2adca78bdcbf61, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 2ba03cecb12ac7ac9e0170e251543c56832d9959, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8, >= 5.15, >= 5.15 < 5.15.145, >= 5.16 < 6.1.40, >= 6.2 < 6.4.5
Fixed versions: 5.15.145, 6.1.40, 6.4.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE: CWE-125