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CVE-2021-47644 (GCVE-0-2021-47644)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-26 11:00
VLAI
Title
media: staging: media: zoran: move videodev alloc
Summary
In the Linux kernel, the following vulnerability has been resolved: media: staging: media: zoran: move videodev alloc Move some code out of zr36057_init() and create new functions for handling zr->video_dev. This permit to ease code reading and fix a zr->video_dev memory leak.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:50 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8dce4b265a5357731058f69645840dabc718c687 (git)
Affected: 61c3b19f7b9eb7c7838fd35f86566230fefd6550 , < bd01629315ffd5b63da91d0bd529a77d30e55028 (git)
Affected: 61c3b19f7b9eb7c7838fd35f86566230fefd6550 , < ff3357bffd9fb78f59762d8955afc7382a279079 (git)
Affected: 61c3b19f7b9eb7c7838fd35f86566230fefd6550 , < c1ba65100a359fe28cfe37e09e10c99f247cbf1e (git)
Affected: 61c3b19f7b9eb7c7838fd35f86566230fefd6550 , < 1e501ec38796f43e995731d1bcd4173cb1ccfce0 (git)
Affected: 61c3b19f7b9eb7c7838fd35f86566230fefd6550 , < 82e3a496eb56da0b9f29fdc5b63cedb3289e91de (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Affected: 5.10
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.2 , < 5.10 (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)
guessed Create a notification for this product.
Show details on NVD website

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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47644.json",
      "version": "3"
    },
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      "current_release_date": "2026-08-29T02:41:20Z",
      "cve": "CVE-2021-47644",
      "id": "CVE-2021-47644",
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      "product_status:recommended": "263",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47644",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47644.json",
      "version": "43"
    },
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                  "attackComplexity": "LOW",
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                  "baseScore": 5.5,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
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              {
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                    "options": [
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                      },
                      {
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                      },
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                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:50:36.427391Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-401",
                    "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T16:01:56.597Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/staging/media/zoran/zoran.h",
                "drivers/staging/media/zoran/zoran_card.c",
                "drivers/staging/media/zoran/zoran_driver.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            },
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              "product": "Linux",
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              ],
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                },
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                {
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                  "lessThanOrEqual": "*",
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: staging: media: zoran: move videodev alloc\n\nMove some code out of zr36057_init() and create new functions for handling\nzr-\u003evideo_dev. This permit to ease code reading and fix a zr-\u003evideo_dev\nmemory leak."
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          ],
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            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "title": "media: staging: media: zoran: move videodev alloc",
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47644",
        "datePublished": "2025-02-26T01:54:14.179Z",
        "dateReserved": "2025-02-26T01:48:21.519Z",
        "dateUpdated": "2026-08-26T11:00:35.437Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.
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  • 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.

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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.


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