CVE-2026-23092VulnerabilityPublished 31 Mar 2026

ZDI-26-250: Linux Kernel Analog Device Driver Improper Validation of Array Index Local Privilege Escalation Vulnerability

Source Zero Day Initiative

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity

High

Rated High by Zero Day Initiative · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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

AI-suggested

Linux has issued an official update that corrects this vulnerability. Users and administrators should apply the provided kernel patch from the stable Linux kernel repository (commit ID: 978d28136c53df38f8f0b747191930e2f95e9084) to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.2. The following CVEs are assigned: CVE-2026-23092.

Impact

The vulnerability allows local attackers with existing high-privileged code execution to escalate privileges and execute arbitrary code in kernel context. This can compromise system integrity, confidentiality, and availability. However, exploitation requires prior high-privilege code execution, limiting the initial attack vector.

Summary

This vulnerability in the Linux Kernel Analog Device Driver arises from improper validation of user-supplied array indices when processing debugfs commands. The lack of bounds checking can cause a write beyond the allocated array, enabling an attacker who already has high-privileged code execution on the system to escalate privileges further and execute arbitrary code within the kernel. The vulnerability has been assigned CVE-2026-23092 and a CVSS score of 8.2 (high severity). Linux has released a patch to fix this issue, available in the stable kernel repository.

References

zerodayinitiative.com/advisories/ZDI-26-250/ (opens in a new tab)

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