CVE-2024-43873 (GCVE-0-2024-43873)

Vulnerability from cvelistv5 – Published: 2024-08-21 00:06 – Updated: 2026-05-11 20:31
VLAI?
Title
vhost/vsock: always initialize seqpacket_allow
Summary
In the Linux kernel, the following vulnerability has been resolved: vhost/vsock: always initialize seqpacket_allow There are two issues around seqpacket_allow: 1. seqpacket_allow is not initialized when socket is created. Thus if features are never set, it will be read uninitialized. 2. if VIRTIO_VSOCK_F_SEQPACKET is set and then cleared, then seqpacket_allow will not be cleared appropriately (existing apps I know about don't usually do this but it's legal and there's no way to be sure no one relies on this). To fix: - initialize seqpacket_allow after allocation - set it unconditionally in set_features
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ced7b713711fdd8f99d8d04dc53451441d194c60 , < ea558f10fb05a6503c6e655a1b7d81fdf8e5924c (git)
Affected: ced7b713711fdd8f99d8d04dc53451441d194c60 , < 3062cb100787a9ddf45de30004b962035cd497fb (git)
Affected: ced7b713711fdd8f99d8d04dc53451441d194c60 , < 30bd4593669443ac58515e23557dc8cef70d8582 (git)
Affected: ced7b713711fdd8f99d8d04dc53451441d194c60 , < eab96e8716cbfc2834b54f71cc9501ad4eec963b (git)
Affected: ced7b713711fdd8f99d8d04dc53451441d194c60 , < 1e1fdcbdde3b7663e5d8faeb2245b9b151417d22 (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.103 , ≤ 6.1.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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Thus if features are never set, it will be\\n   read uninitialized.\\n2. if VIRTIO_VSOCK_F_SEQPACKET is set and then cleared,\\n   then seqpacket_allow will not be cleared appropriately\\n   (existing apps I know about don\u0027t usually do this but\\n    it\u0027s legal and there\u0027s no way to be sure no one relies\\n    on this).\\n\\nTo fix:\\n\\t- initialize seqpacket_allow after allocation\\n\\t- set it unconditionally in set_features\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.165\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.103\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.44\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.3\", \"versionStartIncluding\": \"5.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"5.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:31:28.675Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-43873\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:31:28.675Z\", \"dateReserved\": \"2024-08-17T09:11:59.281Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-21T00:06:25.114Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




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.