CVE-2025-37911: Linux kernel · bnxt_en: Fix out-of-bound memcpy() during ethtool -w
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 13 Nov 2026, 19:21 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- nvd.nist.gov/vuln/detail/CVE-2025-37911 (opens in a new tab)
- git.kernel.org/stable/c/43292b83424158fa6ec458799f3cb9c54d18c484 (opens in a new tab)
- git.kernel.org/stable/c/44807af79efd0d78fa36383dd865ddfe7992c0a6 (opens in a new tab)
- git.kernel.org/stable/c/44d81a9ebf0cad92512e0ffdf7412bfe20db66ec (opens in a new tab)
- git.kernel.org/stable/c/4d69864915a3a052538e4ba76cd6fd77cfc64ebe (opens in a new tab)
- git.kernel.org/stable/c/69b10dd23ab826d0c7f2d9ab311842251978d0c1 (opens in a new tab)
- git.kernel.org/stable/c/6b87bd94f34370bbf1dfa59352bed8efab5bf419 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/08/msg00010.html (opens in a new tab)