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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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
Assigner
References
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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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47644\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:50:36.427391Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:01:56.597Z\"}}], \"cna\": {\"title\": \"media: staging: media: zoran: move videodev alloc\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"8dce4b265a5357731058f69645840dabc718c687\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61c3b19f7b9eb7c7838fd35f86566230fefd6550\", \"lessThan\": \"bd01629315ffd5b63da91d0bd529a77d30e55028\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61c3b19f7b9eb7c7838fd35f86566230fefd6550\", \"lessThan\": \"ff3357bffd9fb78f59762d8955afc7382a279079\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61c3b19f7b9eb7c7838fd35f86566230fefd6550\", \"lessThan\": \"c1ba65100a359fe28cfe37e09e10c99f247cbf1e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61c3b19f7b9eb7c7838fd35f86566230fefd6550\", \"lessThan\": \"1e501ec38796f43e995731d1bcd4173cb1ccfce0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"61c3b19f7b9eb7c7838fd35f86566230fefd6550\", \"lessThan\": \"82e3a496eb56da0b9f29fdc5b63cedb3289e91de\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/staging/media/zoran/zoran.h\", \"drivers/staging/media/zoran/zoran_card.c\", \"drivers/staging/media/zoran/zoran_driver.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.12\"}, {\"status\": \"affected\", \"version\": \"5.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.2\", \"lessThan\": \"5.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.110\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/staging/media/zoran/zoran.h\", \"drivers/staging/media/zoran/zoran_card.c\", \"drivers/staging/media/zoran/zoran_driver.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687\"}, {\"url\": \"https://git.kernel.org/stable/c/bd01629315ffd5b63da91d0bd529a77d30e55028\"}, {\"url\": \"https://git.kernel.org/stable/c/ff3357bffd9fb78f59762d8955afc7382a279079\"}, {\"url\": \"https://git.kernel.org/stable/c/c1ba65100a359fe28cfe37e09e10c99f247cbf1e\"}, {\"url\": \"https://git.kernel.org/stable/c/1e501ec38796f43e995731d1bcd4173cb1ccfce0\"}, {\"url\": \"https://git.kernel.org/stable/c/82e3a496eb56da0b9f29fdc5b63cedb3289e91de\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.2\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.110\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.2\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"5.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-26T11:00:35.437Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47644\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-26T11:00:35.437Z\", \"dateReserved\": \"2025-02-26T01:48:21.519Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:54:14.179Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.