CVE-2025-71064

Local service interruption via uninitialized VF queues

Published Jan 13, 2026 · Updated Jan 13, 2026

Uninitialized resource use in the Linux Kernel hns3 VF driver allows local users to interrupt service when transmit queue counts differ. hclgevf_knic_setup allocates hdev->htqp by hdev->num_tqps but initializes entries only through the smaller kinfo->num_tqps count, leaving later queue-pair pointers uninitialized. Exposure requires the hns3 virtual-function driver and a queue-count change that makes kinfo->num_tqps smaller; the published impact is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized resource use in the Linux Kernel hns3 VF driver allows local users to interrupt service when transmit queue counts differ. hclgevf_knic_setup allocates hdev->htqp by hdev->num_tqps but initializes entries only through the smaller kinfo->num_tqps count, leaving later queue-pair pointers uninitialized. Exposure requires the hns3 virtual-function driver and a queue-count change that makes kinfo->num_tqps smaller; the published impact is limited to availability.

The record

CVE
CVE-2025-71064
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.16
  2. Affected versionversion=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <1956d47a03eb625951e9e070db39fe2590e27510
  3. Affected versionversion=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <429f946a7af3fbf08761d218746cd4afa80a7954
  4. Affected versionversion=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <62f28d79a6186a602a9d926a2dbb5b12b6867df7
  5. Affected versionversion=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <6cd8a2930df850f4600fe8c57d0662b376520281
  6. Affected versionversion=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <c2a16269742e176fccdd0ef9c016a233491a49ad

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.16; version=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <1956d47a03eb625951e9e070db39fe2590e27510; version=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <429f946a7af3fbf08761d218746cd4afa80a7954; version=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <62f28d79a6186a602a9d926a2dbb5b12b6867df7; version=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <6cd8a2930df850f4600fe8c57d0662b376520281; version=e2cb1dec9779ba2d89302a653eb0abaeb8682196 <c2a16269742e176fccdd0ef9c016a233491a49ad

Published CVSS scores

5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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