CVE-2026-93129Hinoki check available

Out-of-bounds read via misindexed key-event data

Published Sep 17, 2026 · Updated Sep 17, 2026

Buffer overread in Linux 5.16's Dell WMI driver allows attackers to read beyond event data via ultra performance key events. The dell_wmi_process_key() handler reads buffer[2] despite receiving data with the type and code already removed, checking only that one data word remains. Reachability requires the affected Dell WMI event path; upstream does not document an attacker-controlled trigger or a path exposing the overread data to users.

CVSS severity3.3
Low
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Buffer overread in Linux 5.16's Dell WMI driver allows attackers to read beyond event data via ultra performance key events. The dell_wmi_process_key() handler reads buffer[2] despite receiving data with the type and code already removed, checking only that one data word remains. Reachability requires the affected Dell WMI event path; upstream does not document an attacker-controlled trigger or a path exposing the overread data to users.

The record

CVE
CVE-2026-93129
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.16
  2. Affected versionversion=5fbd827eb9c224c33a5f263ee543a75fe957faa3 <392c19faec6bf4cb72fb02322e2a61e198dd8f72
  3. Affected versionversion=5fbd827eb9c224c33a5f263ee543a75fe957faa3 <adfd6846bea13667ff28f8aaf00c32fbd69825ab

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=5fbd827eb9c224c33a5f263ee543a75fe957faa3 <392c19faec6bf4cb72fb02322e2a61e198dd8f72; version=5fbd827eb9c224c33a5f263ee543a75fe957faa3 <adfd6846bea13667ff28f8aaf00c32fbd69825ab

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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