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NVD / CVE Program· CNA Linux

CVE-2025-38406: wifi: ath6kl: remove WARN on bad firmware input

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 27d07deea35ae67f2e75913242e25bdb7e1114e5, 327997afbb5e62532c28c1861ab5534c01969c9a, 347827bd0c5680dac2dd59674616840c4d5154f1.

Low priority for now. Upgrade to Linux Linux 27d07deea35ae67f2e75913242e25bdb7e1114e5, 327997afbb5e62532c28c1861ab5534c01969c9a, 347827bd0c5680dac2dd59674616840c4d5154f1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: remove WARN on bad firmware input If the firmware gives bad input, that's nothing to do with the driver's stack at this point etc., so the WARN_ON() doesn't add any value. Additionally, this is one of the top syzbot reports now. Just print a message, and as an added bonus, print the sizes too.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 25, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • linux linux kernel5.5 and later · before 5.10.240
  • linux linux kernel5.11 and later · before 5.15.187
  • linux linux kernel5.16 and later · before 6.1.144
  • linux linux kernelbefore 5.4.296
  • linux linux kernel6.7 and later · before 6.12.37
  • linux linux kernel6.13 and later · before 6.15.6
  • linux linux kernel6.2 and later · before 6.6.97
  • linux linux kernel6.16

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.2affected
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 7a2afdc5af3b82b601f6a2f0d1c90d5f0bc27aebaffected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before e6c49f0b203a987c306676d241066451b74db1a5affected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 46b47d4b06fa7f234d93f0f8ac43798feafcff89affected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 89bd133529a4d2d68287128b357e49adc00ec690affected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 347827bd0c5680dac2dd59674616840c4d5154f1affected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 327997afbb5e62532c28c1861ab5534c01969c9aaffected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before 27d07deea35ae67f2e75913242e25bdb7e1114e5affected · git
    • bdcd81707973cf8aa9305337166f8ee842a050d4 and later · before e7417421d89358da071fd2930f91e67c7128fbffaffected · git
    • before 3.2not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.147-16.1.147-1
Debian:13linuxbefore 6.12.37-16.12.37-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-38403Jul 25, 2025 · vsock/vmci: Clear the vmci transport packet properly when initializing it
    31Monitor
  • ← EarlierCVE-2025-38404Jul 25, 2025 · usb: typec: displayport: Fix potential deadlock
    22Monitor
  • Later →CVE-2025-38407Jul 25, 2025 · riscv: cpu_ops_sbi: Use static array for boot_data
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux27d07deea35ae67f2e75913242e25bdb7e1114e5Vendor (CNA)
Linux Linux327997afbb5e62532c28c1861ab5534c01969c9aVendor (CNA)
Linux Linux347827bd0c5680dac2dd59674616840c4d5154f1Vendor (CNA)
Linux Linux46b47d4b06fa7f234d93f0f8ac43798feafcff89Vendor (CNA)
Linux Linux7a2afdc5af3b82b601f6a2f0d1c90d5f0bc27aebVendor (CNA)
Linux Linux89bd133529a4d2d68287128b357e49adc00ec690Vendor (CNA)
Linux Linuxe6c49f0b203a987c306676d241066451b74db1a5Vendor (CNA)
Linux Linuxe7417421d89358da071fd2930f91e67c7128fbffVendor (CNA)
debian:linux6.1.147-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records