Linux kernel da9063 watchdog resets system during suspend
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
The Linux kernel watchdog driver for the DA9063 PMIC is affected from version 5.19. Its suspend and resume callbacks check only whether userspace has opened the watchdog, so a watchdog that the driver left running at probe keeps counting during system suspend. This can cause an unexpected system reset.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
In the Linux kernel, the following vulnerability has been resolved: watchdog: da9063: fix suspend/resume handling of HW_RUNNING watchdog da9063_wdt_suspend() and da9063_wdt_resume() only check watchdog_active(), when the watchdog is left running by the driver sets WDOG_HW_RUNNING in da9063_wdt_probe() but userspace never opens the device, so WDOG_ACTIVE remains cleared, the wdt_disable() will not be executed in da9063_wdt_suspend. In this case, the suspend callback is a no-op and the watchdog keeps counting during system suspend, leading to an unexpected system reset. Check WDOG_HW_RUNNING and wdd,can fix this issue.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Upgrade the Linux kernel to 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3, which fix the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Linux (Linux) Fixed in 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-14 Threatist record created from CVE-2026-98410
- 2026-10-14 Alias added: GHSA-v9jm-64rh-hf94
- 2026-10-16 Affected versions changed · Red Hat
- 2026-10-16 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/95adc37f47cdf5a5285f7163b24243680af510be
- https://git.kernel.org/stable/c/c30b419c7e6fbe31c48a44c828174168b732dc5b
- https://git.kernel.org/stable/c/1c42e39b0990371b9d76ae22c3f33eb6df341251
- https://git.kernel.org/stable/c/960d1c85381bcaae866dd799b1c905ec5d39ebce
- https://git.kernel.org/stable/c/1db134d0d2a51a136296584854570e5e04adedb0
- https://git.kernel.org/stable/c/7cb575b71ab98194d2e040bded3a7281e089c5ed
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Sources
- CVE-2026-98410 · CVE Program
- CVE-2026-98410 · NVD
- FIRST EPSS
- GHSA-v9jm-64rh-hf94 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98410 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences