CVE-2023-52441

HIGH7.8

ksmbd: fix out of bounds in init_smb2_rsp_hdr()

Published Feb 21, 2024

Modified 8 months ago

Details

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.

References

WEBhttps://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc WEBhttps://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b WEBhttps://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b WEBhttps://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2023-52441

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Ecosystems

Timeline

PublishedFeb 21, 2024

ModifiedMay 4, 2025