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CVE-2024-1085— Use-after-free in Linux kernel's netfilter: nf_tables component

Quick assessment

Affected
Linux Kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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，nft_setelem_catchall_deactivate() 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 EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2024-1085

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_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability. We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7.
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，nft_setelem_catchall_deactivate() 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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Kernel 5.13 ~ 6.8 -

II. Public POCs for CVE-2024-1085

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III. Intelligence Information for CVE-2024-1085

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Patches & Fixes for CVE-2024-1085 (1)

Other References for CVE-2024-1085 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-1085

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