VulnerabilityPublished 18 Oct 2026

CVE-2026-98671: Linux kernel · iio: adc: sun4i-gpadc-iio: clean up on thermal zone registration failure

Source GCVE Database

Authoritative record:CVE-2026-98671

Not known to be exploited · fixed in feae7e0f40d607dda57d476da65beaae76a45142 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Low

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 feae7e0f40d607dda57d476da65beaae76a45142, d74c2489acc5f0a281e7ad00b94912235729a911, 53473b0556296d0eb6a82a8d6769d3f0fc28b940 +2

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-3x5v-wv4g-p3x5

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ b0a242894f11d2a357a77e0eedebb16477151ddd, < feae7e0f40d607dda57d476da65beaae76a45142	Fixed in feae7e0f40d607dda57d476da65beaae76a45142
LinuxLinux	Affected ≥ b0a242894f11d2a357a77e0eedebb16477151ddd, < d74c2489acc5f0a281e7ad00b94912235729a911	Fixed in d74c2489acc5f0a281e7ad00b94912235729a911
LinuxLinux	Affected ≥ b0a242894f11d2a357a77e0eedebb16477151ddd, < 53473b0556296d0eb6a82a8d6769d3f0fc28b940	Fixed in 53473b0556296d0eb6a82a8d6769d3f0fc28b940
LinuxLinux	Affected ≥ b0a242894f11d2a357a77e0eedebb16477151ddd, < 2cdc7ef31827db4fbc6283750420639569e1f0e9	Fixed in 2cdc7ef31827db4fbc6283750420639569e1f0e9
LinuxLinux	Affected ≥ b0a242894f11d2a357a77e0eedebb16477151ddd, < 1bad19e598cd77884d812fd2f88b05c635b5e7ad	Fixed in 1bad19e598cd77884d812fd2f88b05c635b5e7ad
LinuxLinux	Affected =4.15	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to ensure proper cleanup on thermal zone registration failure. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's sun4i-gpadc-iio driver was resolved. The issue involved improper cleanup when thermal zone registration failed during device probing, leading to resources like the IIO map array and runtime PM not being released properly. This could cause resource leaks or unstable device states.

Impact

If the thermal zone registration fails, the driver does not clean up allocated resources, potentially leading to resource leaks and unstable device behavior. There is no indication of direct security impact such as privilege escalation or code execution from the provided data.

Summary

The vulnerability in the Linux kernel's sun4i-gpadc-iio driver occurs when devm_thermal_of_zone_register() fails during probe. The probe function returns without unregistering the IIO map array or disabling runtime power management, resulting in resource leaks. The fix ensures that on failure, the code jumps to the error handling path (err_map) to properly release these resources.

References

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