CVE-2026-45883

Local service interruption via unreleased SPI IRQ

Published May 27, 2026 · Updated May 27, 2026

A resource leak in the Linux Kernel sca3000 IIO driver allows local users to interrupt service by consuming IRQ resources. In sca3000_probe(), request_threaded_irq() reserves spi->irq, but the iio_device_register() failure path returns without releasing that IRQ. The vulnerable path requires an SCA3000 probe to reach a failed IIO registration after the IRQ request; published material does not identify a reliable trigger for local users.

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

What happened

A resource leak in the Linux Kernel sca3000 IIO driver allows local users to interrupt service by consuming IRQ resources. In sca3000_probe(), request_threaded_irq() reserves spi->irq, but the iio_device_register() failure path returns without releasing that IRQ. The vulnerable path requires an SCA3000 probe to reach a failed IIO registration after the IRQ request; published material does not identify a reliable trigger for local users.

The record

CVE
CVE-2026-45883
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=4.10
  2. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <103ac8e3a7f345a0966ef582b8a874ac31a92c7c
  3. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <40c860ece22542178cddcf01b08644bcdbc597b3
  4. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <517d9f2b963089b3d64c23accf7920d77f5a30c8
  5. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <55e13abf22c27a3b0ab5cf941dd07a2d9786736c
  6. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <597d749c5180f3e351837e851a6131b140324e9f
  7. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <62b44ebc1f2c71db3ca2d4737c52e433f6f03038
  8. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <84d3c396d8ae73c24dececfcc4e544ea09311e32
  9. Affected versionversion=9a4936dc89a34e002946a6c08b330918ec6afab8 <e8e960c3d23fdb4882d70d34ce762368da0f1427

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.10; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <103ac8e3a7f345a0966ef582b8a874ac31a92c7c; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <40c860ece22542178cddcf01b08644bcdbc597b3; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <517d9f2b963089b3d64c23accf7920d77f5a30c8; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <55e13abf22c27a3b0ab5cf941dd07a2d9786736c; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <597d749c5180f3e351837e851a6131b140324e9f; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <62b44ebc1f2c71db3ca2d4737c52e433f6f03038; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <84d3c396d8ae73c24dececfcc4e544ea09311e32; version=9a4936dc89a34e002946a6c08b330918ec6afab8 <e8e960c3d23fdb4882d70d34ce762368da0f1427

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS: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

CWE-401Missing Release of Memory after Effective Lifetime
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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