VulnerabilityPublished 18 Jun 2025Updated 5 Nov 2026

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

Affects Linux kernelSource CVE Database V5

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

Data as of 5 Nov 2026, 21:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in b82e496531c571caf8a2ef247f51c160bab2162e, 689805dcc474c2accb5cffbbcea1c06ee4a54570, 090c0ba179eaf7b670e720aa054533756a43d565 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Jun 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 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

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

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < b82e496531c571caf8a2ef247f51c160bab2162e	Fixed in b82e496531c571caf8a2ef247f51c160bab2162e
LinuxLinux	Affected ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 689805dcc474c2accb5cffbbcea1c06ee4a54570	Fixed in 689805dcc474c2accb5cffbbcea1c06ee4a54570
LinuxLinux	Affected ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 090c0ba179eaf7b670e720aa054533756a43d565	Fixed in 090c0ba179eaf7b670e720aa054533756a43d565
LinuxLinux	Affected ≥ 214baf22870cfa437522f3bd4fbae56338674b04, < 9e2bac6835f73895598df5a3a125a19497fad46b	Fixed in 9e2bac6835f73895598df5a3a125a19497fad46b
LinuxLinux	Affected =5.12	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Avoid WARN_ON when configuring MQPRIO with HTB offload enabled When attempting to enable MQPRIO while HTB offload is already configured, the driver currently returns `-EINVAL` and triggers a `WARN_ON`, leading to an unnecessary call trace. Update the code to handle this case more gracefully by returning `-EOPNOTSUPP` instead, while also providing a helpful user message.

References

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