CVE-2025-37815

Kernel panic via incorrect GPIO IRQ dispatch

Published May 8, 2025 · Updated May 23, 2026

Denial of service in the PCI1xxxx GPIO driver in affected Linux kernel branches allows local users to panic the kernel via a generated IRQ. The pci1xxxx_gpio_irq_handler passes the mapped GPIO IRQ to handle_nested_irq, which fails to locate its registered handler because the interrupt is not treated as a nested IRQ. Reachability requires a system using the Microchip PCI1xxxx GPIO endpoint and a generated GPIO interrupt; successful triggering crashes the host.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the PCI1xxxx GPIO driver in affected Linux kernel branches allows local users to panic the kernel via a generated IRQ. The pci1xxxx_gpio_irq_handler passes the mapped GPIO IRQ to handle_nested_irq, which fails to locate its registered handler because the interrupt is not treated as a nested IRQ. Reachability requires a system using the Microchip PCI1xxxx GPIO endpoint and a generated GPIO interrupt; successful triggering crashes the host.

The record

CVE
CVE-2025-37815
Published
May 8, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=194f9f94a5169547d682e9bbcc5ae6d18a564735 <18eb77c75ed01439f96ae5c0f33461eb5134b907
  2. Affected versionversion=194f9f94a5169547d682e9bbcc5ae6d18a564735 <4e02059dc91068bc5017b8546f9ec3b930f6d6a6
  3. Affected versionversion=25692750c0259c5b65afec467d97201a485e8a00 <62957f58ab3aa7fa792dc6ff3575624062539a4d
  4. Affected versionversion=47d3749ec0cb56b7b98917c190a8c10cb54216fd <12cc2193f2b9548e8ea5fbce8201b44158222edf
  5. Affected versionversion=6.1.125 <6.1.136
  6. Affected versionversion=6.12.10 <6.12.26
  7. Affected versionversion=6.13
  8. Affected versionversion=6.6.72 <6.6.89
  9. Affected versionversion=79aef6187e16b2d32307c8ff610e9e04f7f86e1f <1263d5f581908602c618c6665e683c4436383a09

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=194f9f94a5169547d682e9bbcc5ae6d18a564735 <18eb77c75ed01439f96ae5c0f33461eb5134b907; version=194f9f94a5169547d682e9bbcc5ae6d18a564735 <4e02059dc91068bc5017b8546f9ec3b930f6d6a6; version=25692750c0259c5b65afec467d97201a485e8a00 <62957f58ab3aa7fa792dc6ff3575624062539a4d; version=47d3749ec0cb56b7b98917c190a8c10cb54216fd <12cc2193f2b9548e8ea5fbce8201b44158222edf; version=6.1.125 <6.1.136; version=6.12.10 <6.12.26; version=6.13; version=6.6.72 <6.6.89; version=79aef6187e16b2d32307c8ff610e9e04f7f86e1f <1263d5f581908602c618c6665e683c4436383a09

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

T1499.004Application or System Exploitation

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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