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

Vulnerability from cvelistv5 – Published: 2024-06-19 14:58 – Updated: 2025-12-18 11:38
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.
Assigner
References
Impacted products
Vendor Product Version
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)
Create a notification for this product.
    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)
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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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Sightings

Author Source Type Date

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.