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I. Basic Information for CVE-2025-21898
Vulnerability Information

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Vulnerability Title
ftrace: Avoid potential division by zero in function_stat_show()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
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function_stat_show()中潜在的除以零问题。
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 f0629ee3922f10112584b1898491fecc74d98b3b ~ 5b3d32f607f0478b414b16516cf27f9170cf66c8 -
LinuxLinux 5.5 -
II. Public POCs for CVE-2025-21898
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III. Intelligence Information for CVE-2025-21898
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IV. Related Vulnerabilities
V. Comments for CVE-2025-21898

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