ghsa-3wwr-wv4x-4gxg
Vulnerability from github
Published
2024-03-18 12:30
Modified
2024-06-27 12:30
Details

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

hwrng: core - Fix page fault dead lock on mmap-ed hwrng

There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks.

Fix this by using a stack buffer when calling copy_to_user.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52615"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-18T11:15:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - Fix page fault dead lock on mmap-ed hwrng\n\nThere is a dead-lock in the hwrng device read path.  This triggers\nwhen the user reads from /dev/hwrng into memory also mmap-ed from\n/dev/hwrng.  The resulting page fault triggers a recursive read\nwhich then dead-locks.\n\nFix this by using a stack buffer when calling copy_to_user.",
  "id": "GHSA-3wwr-wv4x-4gxg",
  "modified": "2024-06-27T12:30:44Z",
  "published": "2024-03-18T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52615"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26cc6d7006f922df6cc4389248032d955750b2a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5030d4c798863ccb266563201b341a099e8cdd48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6822a14271786150e178869f1495cc03e74c5029"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6a8111aacbfe7a8a70f46cc0de8eed00561693c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eafd83b92f6c044007a3591cbd476bcf90455990"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecabe8cd456d3bf81e92c53b074732f3140f170d"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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