CVE-2021-46950 (GCVE-0-2021-46950)

Vulnerability from cvelistv5 – Published: 2024-02-27 18:40 – Updated: 2025-05-07 20:05
VLAI?
Title
md/raid1: properly indicate failure when ending a failed write request
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 900c531899f5ee2321bef79e20055787bc73251d , < 12216d0919b64ee2ea5dc7a50e455670f44383d5 (git)
Affected: 1cd972e0a10760a1fa27d9830d78446c891c23b6 , < a6e17cab00fc5bf85472434c52ac751426257c6f (git)
Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 6920cef604fa57f9409e3960413e9cc11f5c5a40 (git)
Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 661061a45e32d8b2cc0e306da9f169ad44011382 (git)
Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 59452e551784b7a57a45d971727e9db63b192515 (git)
Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 538244fba59fde17186322776247cd9c05be86dd (git)
Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 2417b9869b81882ab90fd5ed1081a1cb2d4db1dd (git)
Affected: a1f4fcb880988a96c0b2d5c3305ffc4e49eca0ed (git)
Affected: 344242d50f468a250bf4b6136934392758412ed8 (git)
Create a notification for this product.
    Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 4.14.233 , ≤ 4.14.* (semver)
Unaffected: 4.19.191 , ≤ 4.19.* (semver)
Unaffected: 5.4.118 , ≤ 5.4.* (semver)
Unaffected: 5.10.36 , ≤ 5.10.* (semver)
Unaffected: 5.11.20 , ≤ 5.11.* (semver)
Unaffected: 5.12.3 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.36\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.20\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.3\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.2.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.3.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T12:40:35.593Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-46950\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-07T20:05:45.419Z\", \"dateReserved\": \"2024-02-25T13:45:52.722Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-27T18:40:34.106Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.