CVE-2021-47122 (GCVE-0-2021-47122)

Vulnerability from cvelistv5 – Published: 2024-03-15 20:14 – Updated: 2026-05-11 13:48
VLAI
Title
net: caif: fix memory leak in caif_device_notify
Summary
In the Linux kernel, the following vulnerability has been resolved: net: caif: fix memory leak in caif_device_notify In case of caif_enroll_dev() fail, allocated link_support won't be assigned to the corresponding structure. So simply free allocated pointer in case of error
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8 (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < 9348c1f10932f13b299cbc8b1bd5f780751fae49 (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < 4bca2034b41c15b62d47a19158bb76235fd4455d (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < 3be863c11cab725add9fef4237ed4e232c3fc3bb (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < f52f4fd67264c70cd0b4ba326962ebe12d9cba94 (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < af2806345a37313f01b1c9f15e046745b8ee2daa (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < 6a0e317f61094d377335547e015dd2ff12caf893 (git)
Affected: 7c18d2205ea76eef9674e59e1ecae4f332a53e9e , < b53558a950a89824938e9811eddfc8efcd94e1bb (git)
Create a notification for this product.
Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 4.4.272 , ≤ 4.4.* (semver)
Unaffected: 4.9.272 , ≤ 4.9.* (semver)
Unaffected: 4.14.236 , ≤ 4.14.* (semver)
Unaffected: 4.19.194 , ≤ 4.19.* (semver)
Unaffected: 5.4.125 , ≤ 5.4.* (semver)
Unaffected: 5.10.43 , ≤ 5.10.* (semver)
Unaffected: 5.12.10 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:06:11+00:00",
      "cve": "CVE-2021-47122",
      "id": "CVE-2021-47122",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: caif: fix memory leak in caif_device_notify",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47122.json",
      "version": "3"
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
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  }
}



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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.