GHSA-CQ6F-QJ9V-H84P

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-10 15:33
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

watchdog: airoha: Prevent division by zero when clock frequency is zero

clk_get_rate() can return 0 when the clock provider is not properly configured or the clock is unmanaged. The driver uses wdt_freq as a divisor directly in airoha_wdt_probe() to compute max_timeout and in airoha_wdt_get_timeleft() to compute the remaining time, which results in a division by zero.

Add a check for wdt_freq == 0 in probe and return -EINVAL with dev_err_probe() to prevent the division by zero and provide a diagnostic message.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68356"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: airoha: Prevent division by zero when clock frequency is zero\n\nclk_get_rate() can return 0 when the clock provider is not properly\nconfigured or the clock is unmanaged. The driver uses wdt_freq as a\ndivisor directly in airoha_wdt_probe() to compute max_timeout and in\nairoha_wdt_get_timeleft() to compute the remaining time, which results\nin a division by zero.\n\nAdd a check for wdt_freq == 0 in probe and return -EINVAL with\ndev_err_probe() to prevent the division by zero and provide a\ndiagnostic message.",
  "id": "GHSA-cq6f-qj9v-h84p",
  "modified": "2026-08-10T15:33:48Z",
  "published": "2026-08-10T15:33:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68356"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57c3f5bd5be008cd5b4ff6a45b7cb90f5ca45a37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8681e5addf7171602616e256a09057697dcc75ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcfcd7619f277842430d197556463b401b839ee9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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