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CVE-2018-25020

Quick assessment

Affected
n/a n/a
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。KVM是其中的一个基于内核的虚拟机。overlayfs是其中的一套文件系统。 Linux kernel 4.17 之前存在安全漏洞，该漏洞源于 BPF 子系统会错误处理指令序列长跳转的情况，其中内部指令需要大量扩展为多个 BPF 指令，从而导致溢出。这会影响 kernel/bpf/core.c 和 net/core/filter.c。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2018-25020

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
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。KVM是其中的一个基于内核的虚拟机。overlayfs是其中的一套文件系统。 Linux kernel 4.17 之前存在安全漏洞，该漏洞源于 BPF 子系统会错误处理指令序列长跳转的情况，其中内部指令需要大量扩展为多个 BPF 指令，从而导致溢出。这会影响 kernel/bpf/core.c 和 net/core/filter.c。
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
- n/a n/a -

II. Public POCs for CVE-2018-25020

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III. Intelligence Information for CVE-2018-25020

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Patches & Fixes for CVE-2018-25020 (1)

Vendor Advisories for CVE-2018-25020 (1)

Exploits & Public PoCs for CVE-2018-25020 (1)

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IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2018-25020

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