VulnerabilityPublished 18 Oct 2026

CVE-2026-98434: Linux kernel · sysctl: Check range in proc_dointvec_ms_jiffies_minmax

Source GCVE Database

Authoritative record:CVE-2026-98434

Not known to be exploited : upgrade to 82431877d837a6c2593efd8e66ba28b35a220ca4 or 1c23dba51dbf7e86c7c2e617c964be1411329cb4 when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 82431877d837a6c2593efd8e66ba28b35a220ca4, 1c23dba51dbf7e86c7c2e617c964be1411329cb4

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-62hw-vfc3-fh7q

What to do

Upgrade Linux kernel to 82431877d837a6c2593efd8e66ba28b35a220ca4 or 1c23dba51dbf7e86c7c2e617c964be1411329cb4.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d174174c6776a340f5c25aab1ac47a2dd950f380, < 82431877d837a6c2593efd8e66ba28b35a220ca4	Fixed in 82431877d837a6c2593efd8e66ba28b35a220ca4
LinuxLinux	Affected ≥ d174174c6776a340f5c25aab1ac47a2dd950f380, < 1c23dba51dbf7e86c7c2e617c964be1411329cb4	Fixed in 1c23dba51dbf7e86c7c2e617c964be1411329cb4
LinuxLinux	Affected =7.0	Fixed in–

AI-suggested

A fix has been applied to the Linux kernel by restoring the missing range check in the affected function. Users should update to a kernel version that includes this fix once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the current remediation status.

Description

A vulnerability in the Linux kernel related to sysctl handling was resolved by re-adding a range check in the function do_proc_int_conv_ms_jiffies_minmax. This check had been incorrectly removed by a previous commit. The issue pertains to ensuring proper validation of input ranges for kernel parameters.

References

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