ghsa-cfpv-586j-2mfm
Vulnerability from github
Published
2024-09-18 09:30
Modified
2024-11-20 18:32
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

nilfs2: protect references to superblock parameters exposed in sysfs

The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem".

Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46780"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-18T08:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: protect references to superblock parameters exposed in sysfs\n\nThe superblock buffers of nilfs2 can not only be overwritten at runtime\nfor modifications/repairs, but they are also regularly swapped, replaced\nduring resizing, and even abandoned when degrading to one side due to\nbacking device issues.  So, accessing them requires mutual exclusion using\nthe reader/writer semaphore \"nilfs-\u003ens_sem\".\n\nSome sysfs attribute show methods read this superblock buffer without the\nnecessary mutual exclusion, which can cause problems with pointer\ndereferencing and memory access, so fix it.",
  "id": "GHSA-cfpv-586j-2mfm",
  "modified": "2024-11-20T18:32:15Z",
  "published": "2024-09-18T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46780"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/157c0d94b4c40887329418c70ef4edd1a8d6b4ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19cfeba0e4b8eda51484fcf8cf7d150418e1d880"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/683408258917541bdb294cd717c210a04381931e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c6e43b3d5f109cf9c61bc188fcc8175404e924f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/962562d4c70c5cdeb4e955d63ff2017c4eca1aad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b14e7260bb691d7f563f61da07d61e3c8b59a614"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b90beafac05931cbfcb6b1bd4f67c1923f47040e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba97ba173f9625d5f34a986088979eae8b80d38e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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