Linux Kernel up to 6.19-rc1 Vf Driver hclgevf_knic_setup uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2/6.19-rc1 and classified as critical. This issue affects the function hclgevf_knic_setup of the component Vf Driver. Such manipulation leads to uninitialized pointer. This vulnerability is uniquely identified as CVE-2025-71064. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2/6.19-rc1. Affected by this issue is the function hclgevf_knic_setup of the component Vf Driver. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: hns3: using the num_tqps in the vf driver to apply for resources Currently, hdev->htqp is allocated using hdev->num_tqps, and kinfo->tqp is allocated using kinfo->num_tqps. However, kinfo->num_tqps is set to min(new_tqps, hdev->num_tqps); Therefore, kinfo->num_tqps may be smaller than hdev->num_tqps, which causes some hdev->htqp[i] to remain uninitialized in hclgevf_knic_setup(). Thus, this patch allocates hdev->htqp and kinfo->tqp using hdev->num_tqps, ensuring that the lengths of hdev->htqp and kinfo->tqp are consistent and that all elements are properly initialized.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2025-71064 since 01/13/2026. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/14/2026).

The vulnerability scanner Nessus provides a plugin with the ID 298924 (SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.160, 6.6.120, 6.12.64, 6.18.3 or 6.19-rc2 eliminates this vulnerability. Applying the patch 6cd8a2930df850f4600fe8c57d0662b376520281/1956d47a03eb625951e9e070db39fe2590e27510/429f946a7af3fbf08761d218746cd4afa80a7954/62f28d79a6186a602a9d926a2dbb5b12b6867df7/c2a16269742e176fccdd0ef9c016a233491a49ad is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (298924). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298924
Nessus Name: SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.160/6.6.120/6.12.64/6.18.3/6.19-rc2
Patch: 6cd8a2930df850f4600fe8c57d0662b376520281/1956d47a03eb625951e9e070db39fe2590e27510/429f946a7af3fbf08761d218746cd4afa80a7954/62f28d79a6186a602a9d926a2dbb5b12b6867df7/c2a16269742e176fccdd0ef9c016a233491a49ad

Timelineinfo

01/13/2026 Advisory disclosed
01/13/2026 +0 days CVE reserved
01/13/2026 +0 days VulDB entry created
02/14/2026 +32 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71064 (🔒)
GCVE (CVE): GCVE-0-2025-71064
GCVE (VulDB): GCVE-100-340652

Entryinfo

Created: 01/13/2026 17:40
Updated: 02/14/2026 21:17
Changes: 01/13/2026 17:40 (59), 02/14/2026 21:17 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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