CVE-2024-36883 (GCVE-0-2024-36883)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:28 – Updated: 2025-05-04 12:56
VLAI?
Title
net: fix out-of-bounds access in ops_init
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < 3cdc34d76c4f777579e28ad373979d36c030cfd3 (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < 7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < 0c3248bc708a7797be573214065cf908ff1f54c7 (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < 9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030 (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < 2d60ff5874aefd006717ca5e22ac1e25eac29c42 (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < f4f94587e1bf87cb40ec33955a9d90148dd026ab (git)
Affected: 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 , < a26ff37e624d12e28077e5b24d2b264f62764ad6 (git)
Affected: 561331eae0a03d0c4cf60f3cf485aa3e8aa5ab48 (git)
Affected: a2c82f7bee1ffa9eafa1fb0bd886a7eea8c9e497 (git)
Create a notification for this product.
    Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 4.19.314 , ≤ 4.19.* (semver)
Unaffected: 5.4.276 , ≤ 5.4.* (semver)
Unaffected: 5.10.217 , ≤ 5.10.* (semver)
Unaffected: 5.15.159 , ≤ 5.15.* (semver)
Unaffected: 6.1.91 , ≤ 6.1.* (semver)
Unaffected: 6.6.31 , ≤ 6.6.* (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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\"https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: fix out-of-bounds access in ops_init\\n\\nnet_alloc_generic is called by net_alloc, which is called without any\\nlocking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It\\nis read twice, first to allocate an array, then to set s.len, which is\\nlater used to limit the bounds of the array access.\\n\\nIt is possible that the array is allocated and another thread is\\nregistering a new pernet ops, increments max_gen_ptrs, which is then used\\nto set s.len with a larger than allocated length for the variable array.\\n\\nFix it by reading max_gen_ptrs only once in net_alloc_generic. If\\nmax_gen_ptrs is later incremented, it will be caught in net_assign_generic.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.314\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.276\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.217\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.159\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.91\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.31\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.10\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.0.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.2.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T12:56:24.544Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36883\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T12:56:24.544Z\", \"dateReserved\": \"2024-05-30T15:25:07.064Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-30T15:28:53.302Z\", \"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.