VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93129: Linux kernel · platform/x86: dell-wmi-base: Fix handling of ultra performance key

Affects Linux kernelSource GCVE Database

Authoritative record:CVE-2026-93129

Not known to be exploited.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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

Affected software

Product	Affected	Fixed in
Ubuntu 26.04 LTSlinux`pkg:deb/ubuntu/linux?arch=source&distro=resolute`Other threats	Affected 6.17.0-5.5 – 7.0.0-38.38 23 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-aws`pkg:deb/ubuntu/linux-aws?arch=source&distro=resolute`Other threats	Affected 6.17.0-1002.2 – 7.0.0-1014.14 15 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-azure`pkg:deb/ubuntu/linux-azure?arch=source&distro=resolute`Other threats	Affected 6.17.0-1003.3 – 7.0.0-1017.17 15 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-azure-fde`pkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resolute`Other threats	Affected 7.0.0-1003.3 – 7.0.0-1016.16 9 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-gcp`pkg:deb/ubuntu/linux-gcp?arch=source&distro=resolute`Other threats	Affected 6.17.0-1002.2 – 7.0.0-1014.14 13 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-gke`pkg:deb/ubuntu/linux-gke?arch=source&distro=resolute`Other threats	Affected 7.0.0-1002.3 – 7.0.0-1008.9 6 affected builds	Fixed in–

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

AI-suggested

A fix has been implemented in the Linux kernel to correct the indexing error in the dell-wmi-base driver. Users should update to a patched version of the linux-hwe-edge kernel that includes this fix. Since this is a kernel-level fix, applying the official kernel updates from the vendor or distribution is the recommended remediation.

Description

A vulnerability in the Linux kernel's platform/x86 dell-wmi-base driver was fixed to correct the handling of the ultra performance key. The issue involved incorrect indexing when accessing event data fields, which could lead to a potential buffer overread. This flaw was addressed by adjusting the code to use the correct index for the first data field in the event data. The vulnerability affects multiple specific versions of the linux-hwe-edge kernel. No CVSS score is provided, but the impact is assessed as medium severity.

Impact

The vulnerability could cause a buffer overread when processing the ultra performance key event data in the dell-wmi-base driver on affected Linux kernel versions. This may lead to unintended memory access, which could potentially cause system instability or information disclosure depending on the context. No known exploits in the wild have been reported.

Summary

The Linux kernel's platform/x86 dell-wmi-base driver mishandled the ultra performance key event data by using an incorrect index to access the first data field, causing a potential buffer overread. The event data passed to dell_wmi_process_key() is already parsed and the buffer starts after the type and code fields, so the code was corrected to use the proper index. This vulnerability was resolved in specific linux-hwe-edge kernel versions.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Oct 2026, 23:44 UTC

Technical details

References

Community reviews

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