CVE-2021-47203 (GCVE-0-2021-47203)

Vulnerability from cvelistv5 – Published: 2024-04-10 18:56 – Updated: 2025-12-18 11:36
VLAI?
Title
scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output. The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter. If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < ad4776b5eb2e58af1226847fcd3b4f6d051674dd (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < ec70d80a8642900086447ba0cdc79e3f44d42e8f (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < f05a0191b90156e539cccc189b9d87ca2a4d9305 (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < b291d147d0268e93ad866f8bc820ea14497abc9b (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < 16bcbfb56d759c25665f786e33ec633b9508a08f (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < c097bd5a59162156d9c2077a2f58732ffbaa9fca (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < 814d3610c4ce86e8cf285b2cdac0057a42e82de5 (git)
Affected: 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 , < 99154581b05c8fb22607afb7c3d66c1bace6aa5d (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 4.4.293 , ≤ 4.4.* (semver)
Unaffected: 4.9.291 , ≤ 4.9.* (semver)
Unaffected: 4.14.256 , ≤ 4.14.* (semver)
Unaffected: 4.19.218 , ≤ 4.19.* (semver)
Unaffected: 5.4.162 , ≤ 5.4.* (semver)
Unaffected: 5.10.82 , ≤ 5.10.* (semver)
Unaffected: 5.15.5 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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If such an attempt fails, a local \\\"fail_msg\\\"\\nstring is set and a log message output.  The job is then added to a\\ncompletions list for cancellation.\\n\\nProcessing of any further jobs from the txq list continues, but since\\n\\\"fail_msg\\\" remains set, jobs are added to the completions list regardless\\nof whether a wqe was passed to the adapter.  If successfully added to\\ntxcmplq, jobs are added to both lists resulting in list corruption.\\n\\nFix by clearing the fail_msg string after adding a job to the completions\\nlist. This stops the subsequent jobs from being added to the completions\\nlist unless they had an appropriate failure.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.293\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.291\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.256\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.218\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.162\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.82\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.5\", \"versionStartIncluding\": \"2.6.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"2.6.36\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-18T11:36:03.996Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47203\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-18T11:36:03.996Z\", \"dateReserved\": \"2024-03-25T09:12:14.117Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-10T18:56:37.066Z\", \"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.