CVE-2025-21898 - CVE House
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Status published Unknown CVE-2025-21898

ftrace: Avoid potential division by zero in function_stat_show()

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
f0629ee3922f10112584b1898491fecc74d98b3b, e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d, c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef, 015f0fd0fcc338513f80044add27fa46cf71d217, 1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6, 7650b4b1df091815bbbbb837d308dd4154684f8a, 010a7e846d4beaf34384c40ff18d5de10106d9b4, 5.4.9, 3.16.83, 4.4.209, 4.9.209, 4.14.163, 4.19.94, 5.5, 0, 5.4.291, 5.10.235, 5.15.179, 6.1.130, 6.6.81, 6.12.18, 6.13.6, 6.14

Timeline

Official Publish: April 1st, 2025
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.