Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2018-16882

Quick assessment

Affected
The Linux Foundation 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基金会发布的操作系统Linux所使用的内核。KVM hypervisor是其中的一个基于内核的虚拟机。 Linux kernel 4.14.91之前版本、4.14.91之前版本和4.19.13之前版本中KVM hypervisor对posted interrupts的处理方法存在释放后重用漏洞。攻击者可利用该漏洞造成拒绝服务（主机内核崩溃）或可能获取具有特权的系统访问权限。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.36% · P30

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2018-16882

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions before 4.14.91 and before 4.19.13 are vulnerable.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel KVM hypervisor 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。KVM hypervisor是其中的一个基于内核的虚拟机。 Linux kernel 4.14.91之前版本、4.14.91之前版本和4.19.13之前版本中KVM hypervisor对posted interrupts的处理方法存在释放后重用漏洞。攻击者可利用该漏洞造成拒绝服务（主机内核崩溃）或可能获取具有特权的系统访问权限。
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
The Linux Foundation kernel: before 4.14.91 -

II. Public POCs for CVE-2018-16882

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2018-16882

请登录查看更多情报信息。

Vendor Advisories for CVE-2018-16882 (11)

Mailing List Discussions for CVE-2018-16882 (1)

IV. Related Vulnerabilities

Same product: kernel:
Same vendor: The Linux Foundation
Same weakness: CWE-416

V. Comments for CVE-2018-16882

No comments yet

Leave a comment