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CVE-2021-47612 (GCVE-0-2021-47612)

Vulnerability from cvelistv5 – Published: 2024-06-19 14:58 – Updated: 2026-05-11 13:57
VLAI
Title
nfc: fix segfault in nfc_genl_dump_devices_done
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: fix segfault in nfc_genl_dump_devices_done When kmalloc in nfc_genl_dump_devices() fails then nfc_genl_dump_devices_done() segfaults as below KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014 Workqueue: events netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x26/0x80 Call Trace: <TASK> class_dev_iter_exit+0x15/0x20 nfc_genl_dump_devices_done+0x3b/0x50 genl_lock_done+0x84/0xd0 netlink_sock_destruct+0x8f/0x270 __sk_destruct+0x64/0x3b0 sk_destruct+0xa8/0xd0 __sk_free+0x2e8/0x3d0 sk_free+0x51/0x90 netlink_sock_destruct_work+0x1c/0x20 process_one_work+0x411/0x710 worker_thread+0x6fd/0xa80
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-20 13:23 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < ea55b3797878752aa076b118afb727dcf79cac34 (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < 214af18abbe39db05beb305b2d11e87d09a6529c (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < 6644989642844de830f9b072cd65c553cb55946c (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < 2a8845b9603c545fddd17862282dc4c4ce0971e3 (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < d731ecc6f2eaec68f4ad1542283bbc7d07bd0112 (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < c602863ad28ec86794cb4ab4edea5324f555f181 (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < d89e4211b51752daf063d638af50abed2fd5f96d (git)
Affected: 4d12b8b129f170d0fc3188de1e51a2a1b0f87730 , < fd79a0cbf0b2e34bcc45b13acf962e2032a82203 (git)
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Linux Linux Affected: 3.1
Unaffected: 0 , < 3.1 (semver)
Unaffected: 4.4.296 , ≤ 4.4.* (semver)
Unaffected: 4.9.294 , ≤ 4.9.* (semver)
Unaffected: 4.14.259 , ≤ 4.14.* (semver)
Unaffected: 4.19.222 , ≤ 4.19.* (semver)
Unaffected: 5.4.167 , ≤ 5.4.* (semver)
Unaffected: 5.10.87 , ≤ 5.10.* (semver)
Unaffected: 5.15.10 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Trace:\\n\u003cTASK\u003e\\nclass_dev_iter_exit+0x15/0x20\\nnfc_genl_dump_devices_done+0x3b/0x50\\ngenl_lock_done+0x84/0xd0\\nnetlink_sock_destruct+0x8f/0x270\\n__sk_destruct+0x64/0x3b0\\nsk_destruct+0xa8/0xd0\\n__sk_free+0x2e8/0x3d0\\nsk_free+0x51/0x90\\nnetlink_sock_destruct_work+0x1c/0x20\\nprocess_one_work+0x411/0x710\\nworker_thread+0x6fd/0xa80\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: corrige el error de segmentaci\u00f3n en nfc_genl_dump_devices_done Cuando falla kmalloc en nfc_genl_dump_devices(), entonces el error de segmentaci\u00f3n de nfc_genl_dump_devices_done() se muestra a continuaci\u00f3n KASAN: null-ptr-deref en el rango [0x0000000000000008-0x00 0000000000000f] CPU: 0 PID : 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/ 2014 Cola de trabajo: eventos netlink_sock_destruct_work RIP: 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      "current_release_date": "2025-11-21T14:39:50+00:00",
      "cve": "CVE-2021-47612",
      "id": "CVE-2021-47612",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfc: fix segfault in nfc_genl_dump_devices_done",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47612.json",
      "version": "3"
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      "initial_release_date": "2024-06-21T03:52:07Z",
      "product_status:known_affected": "500",
      "product_status:known_not_affected": "63",
      "product_status:recommended": "522",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47612",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47612.json",
      "version": "70"
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{\"status\": \"unaffected\", \"version\": \"4.19.222\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.167\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.87\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/nfc/netlink.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34\"}, {\"url\": \"https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c\"}, {\"url\": \"https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c\"}, {\"url\": \"https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3\"}, {\"url\": \"https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112\"}, {\"url\": \"https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181\"}, {\"url\": \"https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d\"}, {\"url\": \"https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfc: fix segfault in nfc_genl_dump_devices_done\\n\\nWhen kmalloc in nfc_genl_dump_devices() fails then\\nnfc_genl_dump_devices_done() segfaults as below\\n\\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\\nCPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014\\nWorkqueue: events netlink_sock_destruct_work\\nRIP: 0010:klist_iter_exit+0x26/0x80\\nCall Trace:\\n\u003cTASK\u003e\\nclass_dev_iter_exit+0x15/0x20\\nnfc_genl_dump_devices_done+0x3b/0x50\\ngenl_lock_done+0x84/0xd0\\nnetlink_sock_destruct+0x8f/0x270\\n__sk_destruct+0x64/0x3b0\\nsk_destruct+0xa8/0xd0\\n__sk_free+0x2e8/0x3d0\\nsk_free+0x51/0x90\\nnetlink_sock_destruct_work+0x1c/0x20\\nprocess_one_work+0x411/0x710\\nworker_thread+0x6fd/0xa80\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.296\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.294\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.259\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.222\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.167\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.87\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-10T07:12:45.302Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47612\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-10T07:12:45.302Z\", \"dateReserved\": \"2024-06-19T14:55:32.795Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T14:58:01.108Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.