---
id: "CVE-2026-98434"
kind: "vulnerability"
aliases: ["CVE-2026-98434"]
title: "Linux kernel: sysctl millisecond-to-jiffies conversion skips range check"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "kernel", "linux"]
not_affected_if: []
published_at: "2026-10-18T15:16:53+00:00"
first_seen_at: "2026-10-23T21:57:15+00:00"
updated_at: "2026-10-25T05:27:37+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98434", "first_seen_at": "2026-10-23T21:57:15+00:00"}]
---

# Linux kernel: sysctl millisecond-to-jiffies conversion skips range check

A Linux kernel commit removed a range check from the sysctl handler that converts millisecond values to jiffies. The sources do not say what an attacker gets from the missing check.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-98434

## From the sources

In the Linux kernel, the following vulnerability has been resolved:

sysctl: Check range in  proc_dointvec_ms_jiffies_minmax

Add the range check to do_proc_int_conv_ms_jiffies_minmax that commit
d174174c6776 ("sysctl: replace SYSCTL_INT_CONV_CUSTOM macro with
functions") incorrectly removed.

---

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