LiveActive security incident?Get immediate response
CVE Record

CVE-2025-39971: i40e: fix idx validation in config queues msg

In the Linux kernel, the following vulnerability has been resolved: i40e: fix idx validation in config queues msg Ensure idx is within range of active/initialized TCs when iterating over vf->ch[idx] in i40e_vc_config_queues_msg().

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue fixes missing range validation in the i40e network driver. The source does not state impact, CVSS, or exploitation. Organizations should treat it as a kernel maintenance risk for systems running affected Linux versions where the i40e driver path is present.

Executive priority

Medium operational priority where i40e is used; otherwise monitor through normal kernel patch management. Do not escalate as an emergency without impact or exploitation evidence.

Technical view

The fix ensures idx stays within active or initialized traffic-class bounds while iterating vf->ch[idx] in i40e_vc_config_queues_msg(). The affected record lists Linux kernel versions from 4.17 through several stable lines, with stable kernel commits referenced as fixes.

Likely exposure

Exposure is most likely on Linux systems using affected kernel versions with the i40e driver and the relevant queue configuration code path. The bundle does not identify distributions, appliances, or cloud images.

Exploitation context

No active exploitation is supported by the supplied sources. KEV is false, and the record provides no public exploit status, attack prerequisites, or impact details.

Researcher notes

The source evidence is narrow: it identifies a bounds-validation fix in i40e_vc_config_queues_msg(), not the consequence of the bug. Further analysis should review the referenced stable commits and downstream advisories without assuming exploitability.

Mitigation direction

  • Check your vendor or distribution kernel advisory for CVE-2025-39971.
  • Prioritize updates for systems using the Linux i40e driver.
  • Apply kernel updates that include the referenced stable fixes.
  • Track whether your distribution backports the fix under a different kernel version.

Validation and detection

  • Inventory Linux kernel versions across servers and network appliances.
  • Check whether the i40e driver is present or loaded on those systems.
  • Map installed kernels against vendor advisories for CVE-2025-39971.
  • Confirm the relevant stable fix is included or backported.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2025-39971 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
9Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5, c27eac48160de72dee33d42b5a33cc7b8a2eb1f5unaffected
LinuxLinux4.17, 0, 5.4.300, 5.10.245, 5.15.194, 6.1.155, 6.6.109, 6.12.50, 6.16.10, 6.17affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.