PT-2023-2813 · Linux+3 · Linux Kernel+3

Published 2023-05-01 · Updated 2026-03-14 · CVE-2023-32256

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux Kernel (affected versions not specified)

Description The issue is related to insufficient protection of internal data in the ksmbd module of the Linux kernel, which can be exploited by a remote attacker to gain unauthorized access to protected information or cause a denial of service. This can be achieved using SMB2 QUERY INFO and SMB2 LOGOFF commands.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

CWE-421

Related Identifiers

BDU:2023-02739

CVE-2023-32256

ZDI-23-704

Affected Products

Astra Linux

Debian

Linux Kernel

Red Os

References · 21

• https://zerodayinitiative.com/advisories/ZDI-23-704 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-32256 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-32256 · Security Note
• https://osv.dev/vulnerability/CVE-2023-32256 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-32256 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-32256 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-32256 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-32256 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-02739 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-32256 · Vendor Advisory
• https://github.com/torvalds/linux/commit/abcc506a9a71976a8b4c9bf3ee6efd13229c1e19 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-yadra-os-05-09-23-2 · Note
• https://access.redhat.com/security/cve/CVE-2023-32256 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2385885 · Note