watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Fix clock leak and spurious timer in settimeout() msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which introduces two severe bugs: 1. If the watchdog is already active, calling start() again will increase the reference count of the clock again. However stop() is only called once, the reference count is unbalance. 2. If the watchdog is stopped, calling settimeout() will start the hardware timer accidentally. Factor out the register-writing logic into a helper function. Only call it in settimeout() if the watchdog is running. Otherwise, simply update `wdev->timeout`.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.15.222, 6.1.189, 6.12.111, 6.18.53, 6.6.158, 7.2.7
- CVEs
- CVE-2026-97969
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 00:35 UTC · Revision 1
Source evidence
watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
core-osv · Original sourcePublished 25 Sept 2026, 10:23 UTC
In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Fix clock leak and spurious timer in settimeout() msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which introduces two severe bugs: 1. If the watchdog is already active, calling start() again will increase the reference count of the clock again. However stop() is only called once, the reference count is unbalance. 2. If the watchdog is stopped, calling settimeout() will start the hardware timer accidentally. Factor out the register-writing logic into a helper function. Only call it in settimeout() if the watchdog is running. Otherwise, simply update `wdev->timeout`.
osv:CVE-2026-97969
Kernel
Fixed versions: 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7
Complete source record
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"title": "watchdog: msc313e: Fix clock leak and spurious timer in settimeout()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Fix clock leak and spurious timer in settimeout() msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which introduces two severe bugs: 1. If the watchdog is already active, calling start() again will increase the reference count of the clock again. However stop() is only called once, the reference count is unbalance. 2. If the watchdog is stopped, calling settimeout() will start the hardware timer accidentally. Factor out the register-writing logic into a helper function. Only call it in settimeout() if the watchdog is running. Otherwise, simply update `wdev->timeout`.",
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"modified": "2026-10-28T02:30:48.293650543Z",
"provider": "osv",
"references": [
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 516659,
"published_at": "2026-09-25T10:23:10.333+00:00"
}