Review reviewHigh

CVE-2023-52441

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out of bounds in init_smb2_rsp_hdr() If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.

CVSS: 7.8
EPSS: 0.68%
CISA KEV: Not listed
Published: 2024.02.21

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.68%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 330d900620dfc9893011d725b3620cd2ee0bc2bc, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < aa669ef229ae8dd779da9caa24e254964545895f, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 536bb492d39bb6c080c92f31e8a55fe9934f452b, >= 5.15, >= 5.15.0 < 5.15.145, >= 5.16.0 < 6.1.53, >= 6.2.0 < 6.4.16
Fixed versions: 5.15.145, 6.1.53, 6.4.16

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:H/A:H
CWE: CWE-119