GHSA-C3H6-P6WC-J6MG

Vulnerability from github – Published: 2025-09-23 21:30 – Updated: 2025-09-23 21:30
VLAI
Details

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

video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow

Coverity complains of a possible buffer overflow. However, given the 'static' scope of nvidia_setup_i2c_bus() it looks like that can't happen after examiniing the call sites.

CID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW) 1. fixed_size_dest: You might overrun the 48-character fixed-size string chan->adapter.name by copying name without checking the length. 2. parameter_as_source: Note: This defect has an elevated risk because the source argument is a parameter of the current function. 89 strcpy(chan->adapter.name, name);

Fix this warning by using strscpy() which will silence the warning and prevent any future buffer overflows should the names used to identify the channel become much longer.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2021-47642"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T06:37:05Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow\n\nCoverity complains of a possible buffer overflow. However,\ngiven the \u0027static\u0027 scope of nvidia_setup_i2c_bus() it looks\nlike that can\u0027t happen after examiniing the call sites.\n\nCID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW)\n1. fixed_size_dest: You might overrun the 48-character fixed-size string\n  chan-\u003eadapter.name by copying name without checking the length.\n2. parameter_as_source: Note: This defect has an elevated risk because the\n  source argument is a parameter of the current function.\n 89        strcpy(chan-\u003eadapter.name, name);\n\nFix this warning by using strscpy() which will silence the warning and\nprevent any future buffer overflows should the names used to identify the\nchannel become much longer.",
  "id": "GHSA-c3h6-p6wc-j6mg",
  "modified": "2025-09-23T21:30:53Z",
  "published": "2025-09-23T21:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.