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CVE-2023-3338— Crash due to a null pointer dereference in the dn_nsp_send function

Quick assessment

Affected
n/a kernel
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在代码问题漏洞，该漏洞源于存在空指针取消引用，远程用户可以利用此漏洞使系统崩溃。

CVSS 6.5 · Medium EPSS 8.03% · P95

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2023-3338

Vulnerability Information
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Vulnerability Title
Crash due to a null pointer dereference in the dn_nsp_send function
Source: CVE Program / CVE List V5
Vulnerability Description
A null pointer dereference flaw was found in the Linux kernel's DECnet networking protocol. This issue could allow a remote user to crash the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在代码问题漏洞，该漏洞源于存在空指针取消引用，远程用户可以利用此漏洞使系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- kernel 6.5-rc1 -
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Fedora Fedora - -

II. Public POCs for CVE-2023-3338

# POC Description Source Link Shenlong Link
1 Linux kernel LPE practice with an NPD vulnerability https://github.com/TurtleARM/CVE-2023-3338-DECPwn POC Details
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III. Intelligence Information for CVE-2023-3338

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Vendor Advisories for CVE-2023-3338 (4)

Mailing List Discussions for CVE-2023-3338 (3)

Same Patch Batch · n/a · 2023-06-30 · 29 CVEs total

CVE-2023-26135 7.3 HIGH flatnest 安全漏洞
CVE-2023-37360 5.9 MEDIUM Pacparser 注入漏洞
CVE-2023-2908 5.5 MEDIUM Libtiff: null pointer dereference in tif_dir.c
CVE-2023-37301 MediaWiki 安全漏洞
CVE-2023-1206 Linux kernel 资源管理错误漏洞
CVE-2023-33298 Perimeter 81 安全漏洞
CVE-2023-36144 Intelbras SG 2404 MR 安全漏洞
CVE-2023-27469 Malwarebytes 安全漏洞
CVE-2023-29145 Malwarebytes 安全漏洞
CVE-2023-31543 pipreqs 代码问题漏洞
CVE-2023-29147 Malwarebytes 安全漏洞
CVE-2023-37365 Hnswlib 资源管理错误漏洞
CVE-2023-34840 angular-ui-notification 跨站脚本漏洞
CVE-2023-37300 MediaWiki 安全漏洞
CVE-2023-36347 POS Codekop 访问控制错误漏洞
CVE-2023-37302 MediaWiki 跨站脚本漏洞
CVE-2023-37303 MediaWiki 安全漏洞
CVE-2023-37304 MediaWiki 跨站脚本漏洞
CVE-2023-37305 MediaWiki 安全漏洞
CVE-2023-37306 MISP 安全漏洞

Showing top 20 of 29 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-476

V. Comments for CVE-2023-3338

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