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 (v2.0.3)
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < b775383355755885b19d2acef977f1ca132e80a3 (git)
Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < e1b2b2b61d30d7ce057ec17237c217d152ed97f2 (git)
Affected: a28b2bfc099c6b9caa6ef697660408e076a32019 , < fe2535a44904a77615a3af8e8fd7dafb98fb0e1b (git)
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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)
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linux linux_kernel Affected: a28b2bfc099c , < b77538335575 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Affected: a28b2bfc099c , < e1b2b2b61d30 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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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:-:*:*:*:*:*:*:*
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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:-:*:*:*:*:*:*:*
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:40:14+00:00",
      "cve": "CVE-2021-47313",
      "id": "CVE-2021-47313",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "14",
      "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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{\"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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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.