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VulnerabilityPublished Updated

CVE-2025-38039: Linux kernel · net/mlx5e: Avoid WARN_ON when configuring MQPRIO with HTB offload enabled

Source GCVE Database

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Authoritative record:CVE-2025-38039· Low

Not known to be exploited · CVSS 5.5 Low · fixed in b82e496531c571caf8a2ef247f51c160bab2162e : update Linux kernel when convenient.

Data as of 13 Nov 2026, 18:52 UTC

CVSS 3.1 base score
5.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in b82e496531c571caf8a2ef247f51c160bab2162e, 689805dcc474c2accb5cffbbcea1c06ee4a54570, 090c0ba179eaf7b670e720aa054533756a43d565 +1
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 18 Jun 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

Upgrade Linux kernel to b82e496531c571caf8a2ef247f51c160bab2162e, 689805dcc474c2accb5cffbbcea1c06ee4a54570, 090c0ba179eaf7b670e720aa054533756a43d565 or 9e2bac6835f73895598df5a3a125a19497fad46b.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < b82e496531c571caf8a2ef247f51c160bab2162e
Fixed in
  • b82e496531c571caf8a2ef247f51c160bab2162e
LinuxLinuxAffected
  • ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 689805dcc474c2accb5cffbbcea1c06ee4a54570
Fixed in
  • 689805dcc474c2accb5cffbbcea1c06ee4a54570
LinuxLinuxAffected
  • ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 090c0ba179eaf7b670e720aa054533756a43d565
Fixed in
  • 090c0ba179eaf7b670e720aa054533756a43d565
LinuxLinuxAffected
  • ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 9e2bac6835f73895598df5a3a125a19497fad46b
Fixed in
  • 9e2bac6835f73895598df5a3a125a19497fad46b
LinuxLinuxAffected
  • =5.12
Fixed in–

AI-suggested

If you cannot patch yet, avoid configuring MQPRIO with HTB offload enabled simultaneously to prevent the kernel warning.

Description

CVE-2025-38039 is a medium severity vulnerability in the Linux kernel's mlx5e network driver. It occurs when configuring MQPRIO while HTB offload is already enabled, causing the driver to return an invalid argument error and trigger a kernel warning (WARN_ON), which leads to an unnecessary call trace. The issue has been addressed by updating the code to return a more appropriate error code (-EOPNOTSUPP) and provide a helpful user message, avoiding the kernel warning.

References

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