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I. Basic Information for CVE-2025-39823
Vulnerability Information

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Vulnerability Title
KVM: x86: use array_index_nospec with indices that come from guest
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: use array_index_nospec with indices that come from guest min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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。 Linux kernel存在安全漏洞,该漏洞源于未对来自客户端的索引使用array_index_nospec,可能导致推测执行侧信道攻击。
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
VendorProductAffected VersionsCPESubscribe
LinuxLinux 4180bf1b655a791a0a6ef93a2ffffc762722c782 ~ 72777fc31aa7ab2ce00f44bfa3929c6eabbeaf48 -
LinuxLinux 4.19 -
II. Public POCs for CVE-2025-39823
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III. Intelligence Information for CVE-2025-39823
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IV. Related Vulnerabilities
V. Comments for CVE-2025-39823

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