CVE-2025-71180

Kernel service interruption via invalid IRQ locking

Published Jan 31, 2026 · Updated Jan 31, 2026

Improper IRQ context handling in affected Linux Kernel releases beginning with 5.13 allows local users to interrupt kernel service. The interrupt_cnt_isr handler runs with IRQF_NO_THREAD and calls counter_push_event, which acquires events_list_lock as spinlock_t in an invalid wait context. Reachability requires a local process and an active interrupt-cnt counter path; the published impact is service interruption without confidentiality or integrity loss.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper IRQ context handling in affected Linux Kernel releases beginning with 5.13 allows local users to interrupt kernel service. The interrupt_cnt_isr handler runs with IRQF_NO_THREAD and calls counter_push_event, which acquires events_list_lock as spinlock_t in an invalid wait context. Reachability requires a local process and an active interrupt-cnt counter path; the published impact is service interruption without confidentiality or integrity loss.

The record

CVE
CVE-2025-71180
Published
Jan 31, 2026
Updated
Jan 31, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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=5.13
  2. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <1c5a3175aecf82cd86dfcbef2a23e8b26d8d8e7c
  3. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <23f9485510c338476b9735d516c1d4aacb810d46
  4. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <425886b1f8304621b3f16632b274357067d5f13f
  5. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <49a66829dd3653695e60d7cae13521d131362fcd
  6. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <51d2e5d6491447258cb39ff1deb93df15d3c23cb
  7. Affected versionversion=a55ebd47f21f6f0472766fb52c973849e31d1466 <ef668c9a2261ec9287faba6e6ef05a98b391aa2b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.13; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <1c5a3175aecf82cd86dfcbef2a23e8b26d8d8e7c; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <23f9485510c338476b9735d516c1d4aacb810d46; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <425886b1f8304621b3f16632b274357067d5f13f; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <49a66829dd3653695e60d7cae13521d131362fcd; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <51d2e5d6491447258cb39ff1deb93df15d3c23cb; version=a55ebd47f21f6f0472766fb52c973849e31d1466 <ef668c9a2261ec9287faba6e6ef05a98b391aa2b

Published CVSS scores

5.5NIST NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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.

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Technologies

Your stack

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Your stack

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