ghsa-q43w-g673-m6f4
Vulnerability from github
Published
2024-04-17 12:32
Modified
2024-11-04 21:30
Severity ?
6.7 (Medium) - CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Details

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

cifs: fix underflow in parse_server_interfaces()

In this loop, we step through the buffer and after each item we check if the size_left is greater than the minimum size we need. However, the problem is that "bytes_left" is type ssize_t while sizeof() is type size_t. That means that because of type promotion, the comparison is done as an unsigned and if we have negative bytes left the loop continues instead of ending.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26828"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-17T10:15:09Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix underflow in parse_server_interfaces()\n\nIn this loop, we step through the buffer and after each item we check\nif the size_left is greater than the minimum size we need.  However,\nthe problem is that \"bytes_left\" is type ssize_t while sizeof() is type\nsize_t.  That means that because of type promotion, the comparison is\ndone as an unsigned and if we have negative bytes left the loop\ncontinues instead of ending.",
  "id": "GHSA-q43w-g673-m6f4",
  "modified": "2024-11-04T21:30:26Z",
  "published": "2024-04-17T12:32:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26828"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7190353835b4a219abb70f90b06cdcae97f11512"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cffe487026be13eaf37ea28b783d9638ab147204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df2af9fdbc4ddde18a3371c4ca1a86596e8be301"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7ff1c89fb6e9610d2b01c1821727729e6609308"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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