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

Vulnerability from cvelistv5 – Published: 2024-05-30 15:28 – Updated: 2026-05-11 20:16
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)
Create a notification for this product.
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If\\nmax_gen_ptrs is later incremented, it will be caught in net_assign_generic.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corrige el acceso fuera de los l\u00edmites en ops_init net_alloc_generic es llamado por net_alloc, que se llama sin ning\u00fan bloqueo. Lee max_gen_ptrs, que se modifica en pernet_ops_rwsem. Se lee dos veces, primero para asignar una matriz y luego para configurar s.len, que luego se usa para limitar los l\u00edmites del acceso a la matriz. Es posible que la matriz est\u00e9 asignada y otro subproceso est\u00e9 registrando nuevas operaciones de pernet, incrementa max_gen_ptrs, que luego se usa para configurar s.len con una longitud mayor que la asignada para la matriz de variables. Solucionelo leyendo max_gen_ptrs solo una vez en net_alloc_generic. Si max_gen_ptrs se incrementa posteriormente, quedar\u00e1 atrapado en net_assign_generic.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.19\",\"versionEndExcluding\":\"3.1\",\"matchCriteriaId\":\"E86BFBB0-5C03-4D58-AB15-BD380557ED73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.2.3\",\"versionEndExcluding\":\"3.3\",\"matchCriteriaId\":\"5561EB84-683D-4133-AE07-99EA72368275\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.3.1\",\"versionEndExcluding\":\"4.19.314\",\"matchCriteriaId\":\"CC1FA82F-23A7-4986-882F-F85FFC1B6511\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.276\",\"matchCriteriaId\":\"126C6EEC-8874-4233-AE09-634924FCDDF4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.217\",\"matchCriteriaId\":\"AC67C71C-2044-40BA-B590-61E562F69F89\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.159\",\"matchCriteriaId\":\"F16678CD-F7C6-4BF6-ABA8-E7600857197B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.91\",\"matchCriteriaId\":\"4F8C886C-75AA-469B-A6A9-12BF1A29C0D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.31\",\"matchCriteriaId\":\"CDDB1F69-36AC-41C1-9192-E7CCEF5FFC00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.10\",\"matchCriteriaId\":\"6A6B920C-8D8F-4130-86B4-AD334F4CF2E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"938CA222-4FA5-49B6-B828-242572B8208E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DBFD2ACD-728A-4082-BB6A-A1EF6E58E47D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"C31B0E51-F62D-4053-B04F-FC4D5BC373D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A914303E-1CB6-4AAD-9F5F-DE5433C4E814\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"203BBA69-90B2-4C5E-8023-C14180742421\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"0DBFAB53-B889-4028-AC0E-7E165B152A18\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"FE409AEC-F677-4DEF-8EB7-2C35809043CE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"F850DCEC-E08B-4317-A33B-D2DCF39F601B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"91326417-E981-482E-A5A3-28BC1327521B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"DAECDCD8-F556-4606-8D7B-5C6D47A501F2\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"referen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      "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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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

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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.