# CVE-2026-89729

## Summary

- **CVE ID:** CVE-2026-89729
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

HID: sensor-hub: Fix out-of-bounds write in sensor_hub_get_feature

sensor_hub_get_feature() clamps its return value to the caller's buffer
size, but the copy loop still copies field->report_size / 8 bytes for
each report value. A malicious HID descriptor can advertise a large
feature field size while an IIO caller supplies a small stack buffer,
such as a single s32, causing an out-of-bounds write.

HID core stores parsed report values in __s32 slots and clamps extracted
values to 32 bits. Reject feature fields that require more than one slot
per value, guard the total byte count calculation, and clamp each
per-value copy to the remaining caller buffer.

## Affected Products

- Linux — Linux (5459ada2b3cd69e6bf1b0c034feb810975d0072b)
- Linux — Linux (4.9)
- Linux — Linux (0)
- Linux — Linux (6.12.109)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)
- Linux — Linux (5.10.270)
- Linux — Linux (5.15.221)
- Linux — Linux (6.1.188)
- Linux — Linux (6.6.157)

## References

- [CNA](https://git.kernel.org/stable/c/fa95b14198b6c8ea721b4784f466d3c2c2bac83a)
- [CNA](https://git.kernel.org/stable/c/9f43499ce6458a572b781f6bb46c464ab59fa825)
- [CNA](https://git.kernel.org/stable/c/bc3d72c44bff17688dc5f3e5132a53b51dae0f04)
- [CNA](https://git.kernel.org/stable/c/c92693f3ed099401d0383ef35ca1fe1e6ba033de)
- [CNA](https://git.kernel.org/stable/c/1c0463f0f028801a933f090cd2695f132635b374)
- [CNA](https://git.kernel.org/stable/c/4145aa149a32e4b35d5d47e380d0c6c438b4e6fe)
- [CNA](https://git.kernel.org/stable/c/8bf8aaf2f74de64f801eb30bc38927dba1f8e40a)
- [CNA](https://git.kernel.org/stable/c/c5c60260a07e627084e792ea959ab468ccfa4d50)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.35%
- **EPSS Percentile:** 28.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._