GHSA-7MJH-M8R7-CJW8

Vulnerability from github – Published: 2024-04-03 18:30 – Updated: 2025-02-27 15:31
VLAI
Details

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

fbdev: sis: Error out if pixclock equals zero

The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error.

In sisfb_check_var(), var->pixclock is used as a divisor to caculate drate before it is checked against zero. Fix this by checking it at the beginning.

This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-26777"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-369"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T17:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: sis: Error out if pixclock equals zero\n\nThe userspace program could pass any values to the driver through\nioctl() interface. If the driver doesn\u0027t check the value of pixclock,\nit may cause divide-by-zero error.\n\nIn sisfb_check_var(), var-\u003epixclock is used as a divisor to caculate\ndrate before it is checked against zero. Fix this by checking it\nat the beginning.\n\nThis is similar to CVE-2022-3061 in i740fb which was fixed by\ncommit 15cf0b8.",
  "id": "GHSA-7mjh-m8r7-cjw8",
  "modified": "2025-02-27T15:31:49Z",
  "published": "2024-04-03T18:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26777"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99"
    },
    {
      "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": [
    {
      "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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