CVE-2021-47642 (GCVE-0-2021-47642)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2025-12-18 11:38
VLAI?
Title
video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow
Summary
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 47e5533adf118afaf06d25a3e2aaaab89371b1c5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 580e5d3815474b8349250c25c16416585a72c7fe (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 72dd5c46a152136712a55bf026a9aa8c1b12b60d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 055cdd2e7b992921424d4daaa285ced787fb205f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 08dff482012758935c185532b1ad7d584785a86e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6a5226e544ac043bb2d8dc1bfe8920d02282f7cd (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 41baa86b6c802cdc6ab8ff2d46c083c9be93de81 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 37a1a2e6eeeb101285cd34e12e48a881524701aa (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.9.311 , ≤ 4.9.* (semver)
Unaffected: 4.14.276 , ≤ 4.14.* (semver)
Unaffected: 4.19.238 , ≤ 4.19.* (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/nvidia/nv_i2c.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "47e5533adf118afaf06d25a3e2aaaab89371b1c5",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "580e5d3815474b8349250c25c16416585a72c7fe",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "72dd5c46a152136712a55bf026a9aa8c1b12b60d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "055cdd2e7b992921424d4daaa285ced787fb205f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "08dff482012758935c185532b1ad7d584785a86e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6a5226e544ac043bb2d8dc1bfe8920d02282f7cd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "41baa86b6c802cdc6ab8ff2d46c083c9be93de81",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "37a1a2e6eeeb101285cd34e12e48a881524701aa",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/nvidia/nv_i2c.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.311",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.311",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.276",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.238",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.189",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.110",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.33",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.19",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.2",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-18T11:38:21.117Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d"
        },
        {
          "url": "https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f"
        },
        {
          "url": "https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834"
        },
        {
          "url": "https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81"
        },
        {
          "url": "https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa"
        }
      ],
      "title": "video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47642",
    "datePublished": "2025-02-26T01:54:13.193Z",
    "dateReserved": "2025-02-26T01:48:21.519Z",
    "dateUpdated": "2025-12-18T11:38:21.117Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.