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CVE-2021-47501 (GCVE-0-2021-47501)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:01 – Updated: 2026-05-11 13:55
VLAI
Title
i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc
Summary
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc When trying to dump VFs VSI RX/TX descriptors using debugfs there was a crash due to NULL pointer dereference in i40e_dbg_dump_desc. Added a check to i40e_dbg_dump_desc that checks if VSI type is correct for dumping RX/TX descriptors.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-10 18:53 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 02e9c290814cc143ceccecb14eac3e7a05da745e , < e5b7fb2198abc50058f1a29c395b004f76ab1c83 (git)
Affected: 02e9c290814cc143ceccecb14eac3e7a05da745e , < 16431e442db248ecd8aa9457cf0a656f1885f56e (git)
Affected: 02e9c290814cc143ceccecb14eac3e7a05da745e , < 23ec111bf3549aae37140330c31a16abfc172421 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.12
Unaffected: 0 , < 3.12 (semver)
Unaffected: 5.10.85 , ≤ 5.10.* (semver)
Unaffected: 5.15.8 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e5b7fb2198abc50058f1a29c395b004f76ab1c83\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/16431e442db248ecd8aa9457cf0a656f1885f56e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/23ec111bf3549aae37140330c31a16abfc172421\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:39:59.819Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47501\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-10T18:53:53.614307Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-10T18:54:00.536Z\"}}], \"cna\": {\"title\": \"i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"02e9c290814cc143ceccecb14eac3e7a05da745e\", \"lessThan\": \"e5b7fb2198abc50058f1a29c395b004f76ab1c83\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"02e9c290814cc143ceccecb14eac3e7a05da745e\", \"lessThan\": \"16431e442db248ecd8aa9457cf0a656f1885f56e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"02e9c290814cc143ceccecb14eac3e7a05da745e\", \"lessThan\": \"23ec111bf3549aae37140330c31a16abfc172421\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/intel/i40e/i40e_debugfs.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.85\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/intel/i40e/i40e_debugfs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e5b7fb2198abc50058f1a29c395b004f76ab1c83\"}, {\"url\": \"https://git.kernel.org/stable/c/16431e442db248ecd8aa9457cf0a656f1885f56e\"}, {\"url\": \"https://git.kernel.org/stable/c/23ec111bf3549aae37140330c31a16abfc172421\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ni40e: Fix NULL pointer dereference in i40e_dbg_dump_desc\\n\\nWhen trying to dump VFs VSI RX/TX descriptors\\nusing debugfs there was a crash\\ndue to NULL pointer dereference in i40e_dbg_dump_desc.\\nAdded a check to i40e_dbg_dump_desc that checks if\\nVSI type is correct for dumping RX/TX descriptors.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.85\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.8\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"3.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:12:23.634Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47501\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:12:23.634Z\", \"dateReserved\": \"2024-05-22T06:20:56.204Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-24T15:01:49.040Z\", \"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.