HID: haptic: don't write an uninitialized value to unhandled usages (CVE-2026-90197) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90197

HID: haptic: don't write an uninitialized value to unhandled usages

Answer in brief

CVE-2026-90197 records a Unknown severity vulnerability in HID: haptic: don't write an uninitialized value to unhandled usages. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=344ff358495706abc7aac1e0c59a5bb16b350307 <324cc98b71f0d3dee7367ef3c669fd80747e71b6 \|\| >=344ff358495706abc7aac1e0c59a5bb16b350307 <2d92c250815cba6bffd64f0125fac7afe4fa6ce0 \|\| >=344ff358495706abc7aac1e0c59a5bb16b350307 <3efb7f6491526f5012f9ec94769e9ed832feeef8	324cc98b71f0d3dee7367ef3c669fd80747e71b6, 2d92c250815cba6bffd64f0125fac7afe4fa6ce0, 3efb7f6491526f5012f9ec94769e9ed832feeef8
Linux/Linuxgeneric	6.18	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 324cc98b71f0d3dee7367ef3c669fd80747e71b6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: HID: haptic: don't write an uninitialized value to unhandled usages fill_effect_buf() initializes value only for the four haptic usages handled by its switch, but writes it to field->value[] for every usage. An unhandled usage can therefore receive either an uninitialized value or one left over from the previous usage. hid_output_report() then serializes that value into the effect's report buffer. Skip unhandled usages instead. This also matches switch_mode(), which only updates fields it recognizes. Found with Clang's -Wconditional-uninitialized.

Quoted source text, attributed separately from HOL analysis.