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VulnerabilityPublished Updated

CVE-2025-37911: Linux kernel · bnxt_en: Fix out-of-bound memcpy() during ethtool -w

Source GCVE Database

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 13 Nov 2026, 19:21 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

A fix has been implemented in the Linux kernel to cap the memcpy length to the allocated buffer size, preventing out-of-bound memory access. Users should apply the official kernel updates that include this patch once available. No other mitigation or workaround is indicated.

Description

CVE-2025-37911 is a medium severity vulnerability in the Linux kernel's bnxt_en driver. It involves an out-of-bound memcpy() operation during the ethtool -w command when retrieving firmware coredumps. The flaw occurs because the driver copies more data than the allocated buffer size, potentially causing memory corruption. The issue arises from a mismatch between the DMA length returned by firmware and the allocated buffer length. The vulnerability has been fixed by capping the copy length to the buffer size.

References

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