Divide By Zero Affecting linux-virt package, versions <6.12.19-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LINUXVIRT-13326449
  • published6 Oct 2025
  • disclosed1 Apr 2025

Introduced: 1 Apr 2025

CVE-2025-21898  (opens in a new tab)
CWE-369  (opens in a new tab)

How to fix?

Upgrade Minimos:latest linux-virt to version 6.12.19-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-virt package and not the linux-virt package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1