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CVE-2024-1086— Use-after-free in Linux kernel's netfilter: nf_tables component

Quick assessment

Affected
Linux Kernel
Exploitation
Confirmed exploitation in the wild; remediate immediately
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 存在安全漏洞，该漏洞源于netfilter: nf_tables 组件中存在释放后重用，nf_hook_slow() 函数可能会导致双重释放，攻击者利用该漏洞导致本地权限提升。

CVSS 7.8 · High KEV · Ransomware EPSS 28.06% · P98

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
Linux Kernel 3.15< 6.8 affected
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I. Basic Information for CVE-2024-1086

Vulnerability Information
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Vulnerability Title
Use-after-free in Linux kernel's netfilter: nf_tables component
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
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 存在安全漏洞，该漏洞源于netfilter: nf_tables 组件中存在释放后重用，nf_hook_slow() 函数可能会导致双重释放，攻击者利用该漏洞导致本地权限提升。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Kernel 3.15 ~ 6.8 -

II. Public POCs for CVE-2024-1086

# POC Description Source Link Shenlong Link
1 Proof-of-concept exploit for CVE-2024-1086, working on most Linux kernels between (including) v5.14 and (including) v6.6, including (but not limited to) Debian, Ubuntu, and KernelCTF. https://github.com/Notselwyn/CVE-2024-1086 POC Details
2 None https://github.com/Alicey0719/docker-POC_CVE-2024-1086 POC Details
3 None https://github.com/CCIEVoice2009/CVE-2024-1086 POC Details
4 None https://github.com/rootkalilocalhost/CVE-2024-1086 POC Details
5 None https://github.com/kevcooper/CVE-2024-1086-checker POC Details
6 None https://github.com/feely666/CVE-2024-1086 POC Details
7 None https://github.com/xzx482/CVE-2024-1086 POC Details
8 None https://github.com/pl0xe/CVE-2024-1086 POC Details
9 None https://github.com/matrixvk/CVE-2024-1086-aarch64 POC Details
10 None https://github.com/LLfam/CVE-2024-1086 POC Details
11 Educational, non-functional Linux kernel exploit template for CVE-2024-1086 — lab-only security research and teaching (use in controlled VMs only). https://github.com/karim4353/CVE-2024-1086-Exploit POC Details
12 None https://github.com/ndt2111200203/CVE-2024-1086 POC Details
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III. Intelligence Information for CVE-2024-1086

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Patches & Fixes for CVE-2024-1086 (1)

Vendor Advisories for CVE-2024-1086 (1)

Mailing List Discussions for CVE-2024-1086 (8)

Other References for CVE-2024-1086 (4)

IV. Related Vulnerabilities

Same product: Kernel
Same vendor: Linux
Same weakness: CWE-416

V. Comments for CVE-2024-1086

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