# CVE-2025-21651

## Summary

- **CVE ID:** CVE-2025-21651
- **Severity:** MEDIUM
- **CVSS Score:** 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Jan 19, 2025
- **Last Modified:** Sep 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

net: hns3: don't auto enable misc vector

Currently, there is a time window between misc irq enabled
and service task inited. If an interrupte is reported at
this time, it will cause warning like below:

[   16.324639] Call trace:
[   16.324641]  __queue_delayed_work+0xb8/0xe0
[   16.324643]  mod_delayed_work_on+0x78/0xd0
[   16.324655]  hclge_errhand_task_schedule+0x58/0x90 [hclge]
[   16.324662]  hclge_misc_irq_handle+0x168/0x240 [hclge]
[   16.324666]  __handle_irq_event_percpu+0x64/0x1e0
[   16.324667]  handle_irq_event+0x80/0x170
[   16.324670]  handle_fasteoi_edge_irq+0x110/0x2bc
[   16.324671]  __handle_domain_irq+0x84/0xfc
[   16.324673]  gic_handle_irq+0x88/0x2c0
[   16.324674]  el1_irq+0xb8/0x140
[   16.324677]  arch_cpu_idle+0x18/0x40
[   16.324679]  default_idle_call+0x5c/0x1bc
[   16.324682]  cpuidle_idle_call+0x18c/0x1c4
[   16.324684]  do_idle+0x174/0x17c
[   16.324685]  cpu_startup_entry+0x30/0x6c
[   16.324687]  secondary_start_kernel+0x1a4/0x280
[   16.324688] ---[ end trace 6aa0bff672a964aa ]---

So don't auto enable misc vector when request irq..

## Affected Products

- Linux — Linux (6.12.10)
- Linux — Linux (6.13)
- Linux — Linux (7be1b9f3e99f6213d053d16ed2438126931d8351)
- Linux — Linux (5.4)
- Linux — Linux (0)
- Linux — Linux (5.10.270)
- Linux — Linux (5.15.221)
- Linux — Linux (6.1.188)
- Linux — Linux (6.6.157)

## References

- [CNA](https://git.kernel.org/stable/c/bcf430d3bb5525fc89a92a0c451c725ba1aa4306)
- [CNA](https://git.kernel.org/stable/c/98b1e3b27734139c76295754b6c317aa4df6d32e)
- [CNA](https://git.kernel.org/stable/c/800a6dfcf570c4a7e168a6fe515904de56e97148)
- [CNA](https://git.kernel.org/stable/c/ee2861fce5f66c6901a014f68598e94666b23455)
- [CNA](https://git.kernel.org/stable/c/41b84c5a603ffe987ec094e163d7da73aaf1841d)
- [CNA](https://git.kernel.org/stable/c/7f1fe43907a6339a41364f4f7915fbf3ab2775a8)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.15%
- **EPSS Percentile:** 5.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._