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CVE-2021-46930 (GCVE-0-2021-46930)

Vulnerability from cvelistv5 – Published: 2024-02-27 09:43 – Updated: 2026-05-11 13:44
VLAI
Title
usb: mtu3: fix list_head check warning
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: fix list_head check warning This is caused by uninitialization of list_head. BUG: KASAN: use-after-free in __list_del_entry_valid+0x34/0xe4 Call trace: dump_backtrace+0x0/0x298 show_stack+0x24/0x34 dump_stack+0x130/0x1a8 print_address_description+0x88/0x56c __kasan_report+0x1b8/0x2a0 kasan_report+0x14/0x20 __asan_load8+0x9c/0xa0 __list_del_entry_valid+0x34/0xe4 mtu3_req_complete+0x4c/0x300 [mtu3] mtu3_gadget_stop+0x168/0x448 [mtu3] usb_gadget_unregister_driver+0x204/0x3a0 unregister_gadget_item+0x44/0xa4
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-27 20:52 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 83374e035b6286731c5aa617844c7b724294c2a7 , < 585e2b244dda7ea733274e4b8fa27853d625d3bf (git)
Affected: 83374e035b6286731c5aa617844c7b724294c2a7 , < 3b6efe0b7ba03cc2acf0694b46d6ff33c5b4c295 (git)
Affected: 83374e035b6286731c5aa617844c7b724294c2a7 , < 249ddfbe00570d6dc76208e88017937d4d374c79 (git)
Affected: 83374e035b6286731c5aa617844c7b724294c2a7 , < 8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bf (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.170 , ≤ 5.4.* (semver)
Unaffected: 5.10.90 , ≤ 5.10.* (semver)
Unaffected: 5.15.13 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:46:29+00:00",
      "cve": "CVE-2021-46930",
      "id": "CVE-2021-46930",
      "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: usb: mtu3: fix list_head check warning",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-46930.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:37:34Z",
      "cve": "CVE-2021-46930",
      "id": "CVE-2021-46930",
      "initial_release_date": "2024-02-28T04:02:17Z",
      "product_status:known_affected": "254",
      "product_status:known_not_affected": "243",
      "product_status:recommended": "608",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-46930",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-46930.json",
      "version": "55"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/585e2b244dda7ea733274e4b8fa27853d625d3bf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3b6efe0b7ba03cc2acf0694b46d6ff33c5b4c295\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/249ddfbe00570d6dc76208e88017937d4d374c79\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8c313e3bfd9adae8d5c4ba1cc696dcbc86fbf9bf\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:17:42.987Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-46930\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": 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trace:\\ndump_backtrace+0x0/0x298\\nshow_stack+0x24/0x34\\ndump_stack+0x130/0x1a8\\nprint_address_description+0x88/0x56c\\n__kasan_report+0x1b8/0x2a0\\nkasan_report+0x14/0x20\\n__asan_load8+0x9c/0xa0\\n__list_del_entry_valid+0x34/0xe4\\nmtu3_req_complete+0x4c/0x300 [mtu3]\\nmtu3_gadget_stop+0x168/0x448 [mtu3]\\nusb_gadget_unregister_driver+0x204/0x3a0\\nunregister_gadget_item+0x44/0xa4\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.170\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.90\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.13\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": 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      "cveMetadata": "{\"cveId\": \"CVE-2021-46930\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T13:44:38.962Z\", \"dateReserved\": \"2024-02-25T13:45:52.720Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-27T09:43:58.710Z\", \"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.