Linux Kernel up to 6.1.128/6.6.75/6.12.12/6.13.1 hns3 pci_disable_sriov privilege escalation

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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 6.1.128/6.6.75/6.12.12/6.13.1. This affects the function pci_disable_sriov of the component hns3. The manipulation results in an unknown weakness. This vulnerability was named CVE-2025-21802. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.128/6.6.75/6.12.12/6.13.1. It has been classified as problematic. Affected is the function pci_disable_sriov of the component hns3. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix oops when unload drivers paralleling When unload hclge driver, it tries to disable sriov first for each ae_dev node from hnae3_ae_dev_list. If user unloads hns3 driver at the time, because it removes all the ae_dev nodes, and it may cause oops. But we can't simply use hnae3_common_lock for this. Because in the process flow of pci_disable_sriov(), it will trigger the remove flow of VF, which will also take hnae3_common_lock. To fixes it, introduce a new mutex to protect the unload process.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-21802 since 12/29/2024. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 232678 (SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:0847-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.129, 6.6.76, 6.12.13, 6.13.2 or 6.14-rc1 eliminates this vulnerability. Applying the patch e876522659012ef2e73834a0b9f1cbe3f74d5fad/b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c/82736bb83fb0221319c85c2e9917d0189cd84e1e/cafe9a27e22736d4a01b3933e36225f9857c7988/92e5995773774a3e70257e9c95ea03518268bea5 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 databases at Tenable (232678) and CERT Bund (WID-SEC-2025-0461). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 232678
Nessus Name: SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:0847-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.1.129/6.6.76/6.12.13/6.13.2/6.14-rc1
Patch: e876522659012ef2e73834a0b9f1cbe3f74d5fad/b5a8bc47aa0a4aa8bca5466dfa2d12dbb5b3cd0c/82736bb83fb0221319c85c2e9917d0189cd84e1e/cafe9a27e22736d4a01b3933e36225f9857c7988/92e5995773774a3e70257e9c95ea03518268bea5

Timelineinfo

12/29/2024 🔍
02/27/2025 +60 days 🔍
02/27/2025 +0 days 🔍
02/16/2026 +354 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-21802 (🔍)
GCVE (CVE): GCVE-0-2025-21802
GCVE (VulDB): GCVE-100-297888
CERT Bund: WID-SEC-2025-0461 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 02/27/2025 21:28
Updated: 02/16/2026 23:06
Changes: 02/27/2025 21:28 (57), 03/13/2025 19:22 (2), 07/20/2025 15:25 (7), 10/31/2025 00:17 (11), 02/16/2026 23:06 (1)
Complete: 🔍
Cache ID: 216::103

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