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

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-09 · updated 2026-10-15

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.

Affected products

Linux kernel: from 6.8 before 6.12.25; from 6.13 before 6.14.4; 6.15-rc1, 6.15-rc2 — fixed in 6.12.25, 6.14.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.25, 6.14.4. Check the vendor advisory for mitigations.

References

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

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