ghsa-42wq-32p9-mf48
Vulnerability from github
Published
2024-12-29 12:30
Modified
2024-12-29 12:30
Details

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

rtc: check if __rtc_read_time was successful in rtc_timer_do_work()

If the __rtc_read_time call fails,, the struct rtc_time tm; may contain uninitialized data, or an illegal date/time read from the RTC hardware.

When calling rtc_tm_to_ktime later, the result may be a very large value (possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue, they will continually expire, may causing kernel softlockup.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-56739"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-29T12:15:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc-\u003etimerqueue,\nthey will continually expire, may causing kernel softlockup.",
  "id": "GHSA-42wq-32p9-mf48",
  "modified": "2024-12-29T12:30:40Z",
  "published": "2024-12-29T12:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56739"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/246f621d363988e7040f4546d20203dc713fa3e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fde56535505dde3336df438e949ef4742b6d6d6e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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