CVE-2023-52441: linux kernel Buffer Overflow — Fix

Description

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.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.15.0 — 5.15.145
linux	linux_kernel	5.16.0 — 6.1.53
linux	linux_kernel	6.2.0 — 6.4.16

References

Advisories & Patches

https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f

Frequently Asked Questions

What is CVE-2023-52441? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52441? +

CVE-2023-52441 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-52441? +

CVE-2023-52441 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-52441? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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