CVE-2026-98410

Unexpected reboot via missed watchdog hardware-running state

Published Oct 14, 2026 · Updated Oct 14, 2026

A watchdog state-check error in Linux 5.19 allows attackers to cause an unexpected system reboot during suspend on DA9063 hardware. The da9063_wdt_suspend() and da9063_wdt_resume() callbacks check WDOG_ACTIVE but ignore WDOG_HW_RUNNING, leaving the timer counting when userspace has never opened the watchdog device. The affected path requires dlg,use-sw-pm configuration and a running hardware watchdog; suspend lasting beyond its timeout triggers a reset, and the published evidence does not establish attacker privileges or a remote trigger.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A watchdog state-check error in Linux 5.19 allows attackers to cause an unexpected system reboot during suspend on DA9063 hardware. The da9063_wdt_suspend() and da9063_wdt_resume() callbacks check WDOG_ACTIVE but ignore WDOG_HW_RUNNING, leaving the timer counting when userspace has never opened the watchdog device. The affected path requires dlg,use-sw-pm configuration and a running hardware watchdog; suspend lasting beyond its timeout triggers a reset, and the published evidence does not establish attacker privileges or a remote trigger.

The record

CVE
CVE-2026-98410
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=5.19
  2. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <1c42e39b0990371b9d76ae22c3f33eb6df341251
  3. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <1db134d0d2a51a136296584854570e5e04adedb0
  4. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <7cb575b71ab98194d2e040bded3a7281e089c5ed
  5. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <95adc37f47cdf5a5285f7163b24243680af510be
  6. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <960d1c85381bcaae866dd799b1c905ec5d39ebce
  7. Affected versionversion=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <c30b419c7e6fbe31c48a44c828174168b732dc5b

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <1c42e39b0990371b9d76ae22c3f33eb6df341251; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <1db134d0d2a51a136296584854570e5e04adedb0; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <7cb575b71ab98194d2e040bded3a7281e089c5ed; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <95adc37f47cdf5a5285f7163b24243680af510be; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <960d1c85381bcaae866dd799b1c905ec5d39ebce; version=a7ceca4398bc835c6ad29d10e1106de4cf0332e1 <c30b419c7e6fbe31c48a44c828174168b732dc5b

Published CVSS scores

No CVSS assessment is available in this record.

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.

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

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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