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

CVE-2026-93129 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-93129, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-93129
- Priority: High
- CVSS: 7.1 (Moderate)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93129

## Description

In the Linux kernel, the following vulnerability has been resolved:  platform/x86: dell-wmi-base: Fix handling of ultra performance key  The commit message of commit 5fbd827eb9c2 ("platform/x86: dell-wmi: Recognise or support new switches") states that the ultra performance key contains additional data after the type and code fields. The event data passed to dell_wmi_process_key() is already parsed, so "buffer" already starts after those two fields.  Use the correct index for accessing the first data field to avoid a potential buffer overread.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-93129](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93129.md) | Sep 23, 2026 |
| Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-93129](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93129.md) | Sep 23, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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