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{"cveTags": [], "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."}, {"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."}], "id": "CVE-2024-36883", "lastModified": "2024-06-27T13:15:59.953", "metrics": {}, "published": "2024-05-30T16:15:11.900", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c3248bc708a7797be573214065cf908ff1f54c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d60ff5874aefd006717ca5e22ac1e25eac29c42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cdc34d76c4f777579e28ad373979d36c030cfd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a26ff37e624d12e28077e5b24d2b264f62764ad6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4f94587e1bf87cb40ec33955a9d90148dd026ab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:6206", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.70.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-09-03T00:00:00Z"}, {"advisory": "RHSA-2024:6567", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.35.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-09-11T00:00:00Z"}, {"advisory": "RHSA-2024:6567", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.35.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-09-11T00:00:00Z"}, {"advisory": "RHSA-2024:5672", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.80.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:5673", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.80.1.rt14.365.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-21T00:00:00Z"}], "bugzilla": {"description": "kernel: net: fix out-of-bounds access in ops_init", "id": "2284271", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2284271"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: fix out-of-bounds access in ops_init\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.\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.\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.", "An out-of-bounds memory access flaw was found in the Linux kernel\u2019s networking subsystem in how a local user triggers a complex race condition. This flaw allows a local user to crash or potentially escalate their privileges on the system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-36883", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-36883\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-36883\nhttps://lore.kernel.org/linux-cve-announce/2024053032-CVE-2024-36883-b892@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 4.19.314, kernel 5.4.276, kernel 5.10.217, kernel 5.15.159, kernel 6.1.91, kernel 6.6.31, kernel 6.8.10, kernel 6.9"}