CVE-2019-3887
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基金会的开源操作系统Linux所使用的内核。 Linux kernel 4.16版本及之后版本中存在输入验证错误漏洞。攻击者利用该漏洞导致系统崩溃，从而导致拒绝服务。
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2019-3887
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 输入验证错误漏洞
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 4.16版本及之后版本中存在输入验证错误漏洞。攻击者利用该漏洞导致系统崩溃，从而导致拒绝服务。
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 | from 4.16 | - |
|
II. Public POCs for CVE-2019-3887
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2019-3887
请登录查看更多情报信息。
Vendor Advisories for CVE-2019-3887 (5)
-
http://www.securityfocus.com/bid/107850 vdb-entry
-
https://usn.ubuntu.com/3980-2/ vendor-advisory
-
https://usn.ubuntu.com/3980-1/ vendor-advisory
-
-
https://access.redhat.com/errata/RHSA-2019:2741 vendor-advisory
Mailing List Discussions for CVE-2019-3887 (1)
IV. Related Vulnerabilities
Same product: Kernel
-
CVE-2025-26604
Possibility to retrieve bot token by malicious module develo -
CVE-2021-35000
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform -
CVE-2021-34999
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform -
CVE-2021-34981
Linux Kernel Bluetooth CMTP Module Double Free Privilege Esc -
CVE-2024-24898
Information Leakage in kernel
Same weakness: CWE-863
-
CVE-2026-77611
SeaweedFS: Authenticated S3 object-scope bypass in PutObject -
CVE-2026-43621
Simple Machines Forum < 2.1.7 Authorization Confusion via Pr -
CVE-2026-77317
SeaweedFS: SFTP path ACL literal prefix match permits cross- -
CVE-2026-77298
SeaweedFS S3 OIDC Bearer authentication bypasses IAM role tr -
CVE-2026-66003
Frappe: Access control bypass via REST API dot-notation fiel
V. Comments for CVE-2019-3887
No comments yet