VulnerabilityPublished 18 Oct 2026

CVE-2026-98673: Linux kernel · iio: adc: pac1934: check ACPI label duplication

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1, 7996557c6b7d3b136668060057a790e058161dfe, 64c82e7bd9c82b0c9276297df34a3579e8658f55 +1

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.

What to do

Upgrade Linux kernel to b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1, 7996557c6b7d3b136668060057a790e058161dfe, 64c82e7bd9c82b0c9276297df34a3579e8658f55 or 2eb7f097e15dc8935b49402456d01f3ab68f3ddd.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 0fb528c8255bd2de6a2fba26ed28d75a7f0cb630, < b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1	Fixed in b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1
LinuxLinux	Affected ≥ 0fb528c8255bd2de6a2fba26ed28d75a7f0cb630, < 7996557c6b7d3b136668060057a790e058161dfe	Fixed in 7996557c6b7d3b136668060057a790e058161dfe
LinuxLinux	Affected ≥ 0fb528c8255bd2de6a2fba26ed28d75a7f0cb630, < 64c82e7bd9c82b0c9276297df34a3579e8658f55	Fixed in 64c82e7bd9c82b0c9276297df34a3579e8658f55
LinuxLinux	Affected ≥ 0fb528c8255bd2de6a2fba26ed28d75a7f0cb630, < 2eb7f097e15dc8935b49402456d01f3ab68f3ddd	Fixed in 2eb7f097e15dc8935b49402456d01f3ab68f3ddd
LinuxLinux	Affected =6.9	Fixed in–
Linuxlinux/kernel`pkg:deb/linux/kernel`Other threats	Affected =6.9	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

The vulnerability has been fixed in the Linux kernel. Users should update to a Linux kernel version that includes the commits identified as fixes (e.g., those referenced by commits b7ac07d0b1a44bf644733298e80fd1f22e2f0cc1, 7996557c6b7d3b136668060057a790e058161dfe, 64c82e7bd9c82b0c9276297df34a3579e8658f55, and 2eb7f097e15dc8935b49402456d01f3ab68f3ddd). No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's iio adc pac1934 driver involved improper handling of ACPI label duplication. The issue caused a failure that reached the terminating-byte write, potentially leading to access of a missing label. The flaw was detected by static analysis and fixed by adding checks to release the ACPI result and abort before accessing missing labels. The fix is included in specific Linux kernel commits.

Impact

The vulnerability could cause improper handling of ACPI label duplication in the Linux kernel driver, potentially leading to invalid memory access or kernel instability. No public exploits or in-the-wild exploitation have been reported. The impact is limited to the affected driver and kernel version.

Summary

CVE-2026-98673 addresses a flaw in the Linux kernel's industrial I/O (iio) ADC pac1934 driver where duplication of ACPI labels was not properly checked. This led to a failure condition that proceeded to write a terminating byte, risking access to an invalid or missing label. The vulnerability was identified through static analysis and AI-assisted source auditing. The resolution involves releasing the ACPI result and aborting early to prevent access to missing labels, while earlier labels are managed by devres. The fix is present in several Linux kernel commits.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 10:02 UTC

Technical details

References

Community reviews

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