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CVE-2021-47313 (GCVE-0-2021-47313)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2026-05-11 13:52
VLAI
Title
cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init
Summary
In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init It's a classic example of memleak, we allocate something, we fail and never free the resources. Make sure we free all resources on policy ->init() failures.
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-06 16:12 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < b775383355755885b19d2acef977f1ca132e80a3 (git)
Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < e1b2b2b61d30d7ce057ec17237c217d152ed97f2 (git)
Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < fe2535a44904a77615a3af8e8fd7dafb98fb0e1b (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.12.19 , ≤ 5.12.* (semver)
Unaffected: 5.13.4 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: a28b2bfc099c , < b77538335575 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: a28b2bfc099c , < e1b2b2b61d30 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: a28b2bfc099c , < fe2535a44904 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: 5.11
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Unaffected: 0 , < 5.11 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.12.19 , ≤ 5.13 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.13.4 , ≤ 5.14 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.14
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
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      "current_release_date": "2026-08-25T10:02:48+00:00",
      "cve": "CVE-2021-47313",
      "id": "CVE-2021-47313",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "44",
      "product_status:known_not_affected": "122",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47313.json",
      "version": "3"
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      "initial_release_date": "2024-05-23T03:04:47Z",
      "product_status:known_not_affected": "385",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47313",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47313.json",
      "version": "20"
    },
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{\"status\": \"unaffected\", \"version\": \"5.13.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.13.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/cpufreq/cppc_cpufreq.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b775383355755885b19d2acef977f1ca132e80a3\"}, {\"url\": \"https://git.kernel.org/stable/c/e1b2b2b61d30d7ce057ec17237c217d152ed97f2\"}, {\"url\": \"https://git.kernel.org/stable/c/fe2535a44904a77615a3af8e8fd7dafb98fb0e1b\"}], \"x_generator\": {\"engine\": \"bippy-9e1c9544281a\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init\\n\\nIt\u0027s a classic example of memleak, we allocate something, we fail and\\nnever free the resources.\\n\\nMake sure we free all resources on policy -\u003einit() failures.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-04T12:03:29.913Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47313\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-04T12:03:29.913Z\", \"dateReserved\": \"2024-05-21T14:28:16.973Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:35:30.607Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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.