VulnerabilityPublished 18 Oct 2026

CVE-2026-98678: Linux kernel · iio: adc: ad4030: fix invalid oversampling_ratio validation

Source GCVE Database

Authoritative record:CVE-2026-98678· Medium

Not known to be exploited · fixed in d615210564205993e8f0e7ccb57cc2e66b7d5706 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d615210564205993e8f0e7ccb57cc2e66b7d5706, 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1, 6b0cc4e32599f59c994a60743f53fc72cb2979f4

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-m2wg-6jmr-mfrp

What to do

Upgrade Linux kernel to d615210564205993e8f0e7ccb57cc2e66b7d5706, 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1 or 6b0cc4e32599f59c994a60743f53fc72cb2979f4.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 949abd1ca5a4342d9fb8c774035222e65dd1cfe4, < d615210564205993e8f0e7ccb57cc2e66b7d5706	Fixed in d615210564205993e8f0e7ccb57cc2e66b7d5706
LinuxLinux	Affected ≥ 949abd1ca5a4342d9fb8c774035222e65dd1cfe4, < 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1	Fixed in 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1
LinuxLinux	Affected ≥ 949abd1ca5a4342d9fb8c774035222e65dd1cfe4, < 6b0cc4e32599f59c994a60743f53fc72cb2979f4	Fixed in 6b0cc4e32599f59c994a60743f53fc72cb2979f4
LinuxLinux	Affected =6.15	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to validate the input before computing the logarithm. Users should update to the patched kernel version once available.

Description

A vulnerability in the Linux kernel's iio adc ad4030 driver was fixed by correcting invalid input validation for the oversampling_ratio parameter. The issue involved calculating a logarithm before validating that the input was strictly positive, which could lead to undefined behavior when zero or negative values were passed.

References

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