CVE-2026-64503

Device autosuspend denial via leaked runtime reference

Published Jul 25, 2026 · Updated Jul 25, 2026

Resource leakage in the Linux Kernel kxsd9 accelerometer driver allows local users to prevent the device from autosuspending. On a scale write with a nonzero integer part, kxsd9_write_raw() returns -EINVAL after pm_runtime_get_sync() without calling pm_runtime_put_autosuspend(), leaking one usage-counter reference per write. Local access to the driver's scale control and a kxsd9-backed device are required; repeated writes keep that device active and increase power use.

CVSS severity3.3
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource leakage in the Linux Kernel kxsd9 accelerometer driver allows local users to prevent the device from autosuspending. On a scale write with a nonzero integer part, kxsd9_write_raw() returns -EINVAL after pm_runtime_get_sync() without calling pm_runtime_put_autosuspend(), leaking one usage-counter reference per write. Local access to the driver's scale control and a kxsd9-backed device are required; repeated writes keep that device active and increase power use.

The record

CVE
CVE-2026-64503
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-772, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 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=4.9
  2. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <13a91e8631cfeb68e5b7fd6687f194f5a86e83fe
  3. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <191fcfeb729ededd8dd2a999c6bf351ddfa0cec7
  4. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <223703d6e8bed50b6a0b47e160877909518d94b9
  5. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <36154171385a8a2444a4b3c6eaa0c5294cb02478
  6. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <44a5fd874bb6873bdaec59f722c1d57832fbc9df
  7. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <6293211d142605bec435229ef0aa3668b8964164
  8. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <a93fd69c1ab0854ac4f5b8439c26dfadb25dfd20
  9. Affected versionversion=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <eeece4a85ece6f3837c75ef26a9b2bf5a1d0fcfc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.9; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <13a91e8631cfeb68e5b7fd6687f194f5a86e83fe; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <191fcfeb729ededd8dd2a999c6bf351ddfa0cec7; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <223703d6e8bed50b6a0b47e160877909518d94b9; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <36154171385a8a2444a4b3c6eaa0c5294cb02478; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <44a5fd874bb6873bdaec59f722c1d57832fbc9df; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <6293211d142605bec435229ef0aa3668b8964164; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <a93fd69c1ab0854ac4f5b8439c26dfadb25dfd20; version=9a9a369d6178dd4e263c49085ce1b37e1e8f63a0 <eeece4a85ece6f3837c75ef26a9b2bf5a1d0fcfc

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-772Missing Release of Resource after Effective Lifetime
T1499.004Endpoint Denial of Service: Application or System Exploitation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo