Linux Kernel up to 7.3-rc3 Watchdog Driver da9063_wdt.c da9063_wdt_suspend external control of assumed-immutable web parameter

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.81-

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 7.3-rc3. Impacted is the function da9063_wdt_suspend of the file da9063_wdt.c of the component Watchdog Driver. This manipulation causes external control of assumed-immutable web parameter. This vulnerability is registered as CVE-2026-98410. The attack needs to be launched locally. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.3-rc3. It has been declared as problematic. Affected by this vulnerability is the function da9063_wdt_suspend of the file da9063_wdt.c of the component Watchdog Driver. The manipulation with an unknown input leads to a external control of assumed-immutable web parameter vulnerability. The CWE definition for the vulnerability is CWE-472. The web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields. As an impact it is known to affect integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-98410 since 09/25/2026. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3-rc4 eliminates this vulnerability. Applying the patch 95adc37f47cdf5a5285f7163b24243680af510be/c30b419c7e6fbe31c48a44c828174168b732dc5b/1c42e39b0990371b9d76ae22c3f33eb6df341251/960d1c85381bcaae866dd799b1c905ec5d39ebce/1db134d0d2a51a136296584854570e5e04adedb0/7cb575b71ab98194d2e040bded3a7281e089c5ed is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: External control of assumed-immutable web parameter
CWE: CWE-472
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.189/6.6.158/6.12.112/6.18.54/7.2.8/7.3-rc4
Patch: 95adc37f47cdf5a5285f7163b24243680af510be/c30b419c7e6fbe31c48a44c828174168b732dc5b/1c42e39b0990371b9d76ae22c3f33eb6df341251/960d1c85381bcaae866dd799b1c905ec5d39ebce/1db134d0d2a51a136296584854570e5e04adedb0/7cb575b71ab98194d2e040bded3a7281e089c5ed

Timelineinfo

09/25/2026 CVE reserved
10/14/2026 +19 days Advisory disclosed
10/14/2026 +0 days VulDB entry created
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98410 (🔒)
GCVE (CVE): GCVE-0-2026-98410
GCVE (VulDB): GCVE-100-419875

Entryinfo

Created: 10/14/2026 16:10
Changes: 10/14/2026 16:10 (60)
Complete: 🔍
Cache ID: 216::103

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