CVE-2026-90194

Resource leak via incomplete ACPI registration rollback

Published Sep 17, 2026 · Updated Sep 17, 2026

Resource leakage in Linux Kernel 3.14 ACPI scanning allows local users to consume bus IDs through failed device registration. The device_add() rollback in drivers/acpi/scan.c leaves acpi_bus_id_list entries and allocated instance IDs behind after acpi_device_set_name(), rather than releasing them. Triggering requires device_add() to fail after allocation; public sources do not describe an attacker-controlled trigger or a resulting hang, crash, or reboot.

CVSS severity2.5
Low
EPSS probability0.21%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leakage in Linux Kernel 3.14 ACPI scanning allows local users to consume bus IDs through failed device registration. The device_add() rollback in drivers/acpi/scan.c leaves acpi_bus_id_list entries and allocated instance IDs behind after acpi_device_set_name(), rather than releasing them. Triggering requires device_add() to fail after allocation; public sources do not describe an attacker-controlled trigger or a resulting hang, crash, or reboot.

The record

CVE
CVE-2026-90194
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.14
  2. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <0b9053cd0955c7cd66d71a8442be33926d70e197
  3. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <15512c6b5dea72fb5f1f41c1aa96f3f32531ca03
  4. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <83ee65feadc88de681abc6e977d54eceda95abd7
  5. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <8cc2017aa804f157e717b5fd471e50fbddfec654
  6. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <a414485ebc2aa50907d0ce97cde2b1a353696897
  7. Affected versionversion=d783156ea38431b20af0d4f910a6f9f9054d33b9 <f30379b8a4e24623594235dd5aefb2957e0cc228

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Linux Foundation · Linux Kernelversion=3.14; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <0b9053cd0955c7cd66d71a8442be33926d70e197; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <15512c6b5dea72fb5f1f41c1aa96f3f32531ca03; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <83ee65feadc88de681abc6e977d54eceda95abd7; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <8cc2017aa804f157e717b5fd471e50fbddfec654; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <a414485ebc2aa50907d0ce97cde2b1a353696897; version=d783156ea38431b20af0d4f910a6f9f9054d33b9 <f30379b8a4e24623594235dd5aefb2957e0cc228

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
2.5SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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