CVE-2026-68464

System instability via suspend-time interrupt race

Published Aug 15, 2026 · Updated Aug 15, 2026

Improper resource locking in the Linux sdhci-esdhc-imx driver 6.16 allows attackers to destabilize the host during wake-up. The suspend path leaves the unshared uSDHC IRQ enabled when device_may_wakeup() is false, so an early Wi-Fi card interrupt reaches a runtime-suspended controller and goes unhandled. Exploitation requires compatible uSDHC and Wi-Fi out-of-band wake hardware plus control sufficient to trigger sleep and wake transitions; the bounded result is a denial of service.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper resource locking in the Linux sdhci-esdhc-imx driver 6.16 allows attackers to destabilize the host during wake-up. The suspend path leaves the unshared uSDHC IRQ enabled when device_may_wakeup() is false, so an early Wi-Fi card interrupt reaches a runtime-suspended controller and goes unhandled. Exploitation requires compatible uSDHC and Wi-Fi out-of-band wake hardware plus control sufficient to trigger sleep and wake transitions; the bounded result is a denial of service.

The record

CVE
CVE-2026-68464
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-413, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=6.16
  2. Affected versionversion=676a83855614635af3bf31ad3f8fec4031f81354 <4f96903e2fd228aa96013372402d650f6dbe5cb3
  3. Affected versionversion=676a83855614635af3bf31ad3f8fec4031f81354 <9bf4ee05a1109d889de9151ee78bd80293923f70
  4. Affected versionversion=676a83855614635af3bf31ad3f8fec4031f81354 <9d87eaf985cef9581b6ed99b461b38e8cd666480

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.16; version=676a83855614635af3bf31ad3f8fec4031f81354 <4f96903e2fd228aa96013372402d650f6dbe5cb3; version=676a83855614635af3bf31ad3f8fec4031f81354 <9bf4ee05a1109d889de9151ee78bd80293923f70; version=676a83855614635af3bf31ad3f8fec4031f81354 <9d87eaf985cef9581b6ed99b461b38e8cd666480

Published CVSS scores

5.5Red HatCVSS: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-413Improper Resource Locking
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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