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watchdog: msc313e: Fix clock leak and spurious timer in settimeout()

Type: advisorySource: Official CVE List1 source record

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`.

Announced Source revision 1
Original source ↗

CVE-2026-97969

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-97969

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "68665016c7b777b44e27b6b0c1e6524c28ebe40a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "77ef2aa8b46876ca9935f32dd874c517ccf5d880",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "a1dd0817776ea2a870ba2347001af13ddd4cb321",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "2152a13ee2a9af09a668ebd053a8dbf771dadb80",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "2abf99a57b0b71b2b97745981f4039370ab78044",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "faf1eb2895c87a8c0fb920439dddc7e0d97c6a69",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e9800b7994642a794afd4894f072541c14277ce8",
        "lessThan": "3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/watchdog/msc313e_wdt.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.14"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.14",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.111",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.53",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.7",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/watchdog/msc313e_wdt.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-97969

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#38105 · Revision 1
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Publisher date
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