{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-17T02:35:59.326","vulnerabilities":[{"cve":{"id":"CVE-2021-47102","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-03-04T18:15:08.600","lastModified":"2025-02-14T14:54:40.247","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix incorrect structure access\n\nIn line:\n\tupper = info->upper_dev;\nWe access upper_dev field, which is related only for particular events\n(e.g. event == NETDEV_CHANGEUPPER). So, this line cause invalid memory\naccess for another events,\nwhen ptr is not netdev_notifier_changeupper_info.\n\nThe KASAN logs are as follows:\n\n[   30.123165] BUG: KASAN: stack-out-of-bounds in prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera]\n[   30.133336] Read of size 8 at addr ffff80000cf772b0 by task udevd/778\n[   30.139866]\n[   30.141398] CPU: 0 PID: 778 Comm: udevd Not tainted 5.16.0-rc3 #6\n[   30.147588] Hardware name: DNI AmazonGo1 A7040 board (DT)\n[   30.153056] Call trace:\n[   30.155547]  dump_backtrace+0x0/0x2c0\n[   30.159320]  show_stack+0x18/0x30\n[   30.162729]  dump_stack_lvl+0x68/0x84\n[   30.166491]  print_address_description.constprop.0+0x74/0x2b8\n[   30.172346]  kasan_report+0x1e8/0x250\n[   30.176102]  __asan_load8+0x98/0xe0\n[   30.179682]  prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera]\n[   30.186847]  prestera_netdev_event_handler+0x1b4/0x1c0 [prestera]\n[   30.193313]  raw_notifier_call_chain+0x74/0xa0\n[   30.197860]  call_netdevice_notifiers_info+0x68/0xc0\n[   30.202924]  register_netdevice+0x3cc/0x760\n[   30.207190]  register_netdev+0x24/0x50\n[   30.211015]  prestera_device_register+0x8a0/0xba0 [prestera]"},{"lang":"es","value":"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net:marvell:prestera: corrige el acceso a la estructura incorrecta En línea: superior = info->upper_dev; Accedemos al campo Upper_dev, que está relacionado sólo para eventos particulares (por ejemplo, evento == NETDEV_CHANGEUPPER). Entonces, esta línea causa un acceso no válido a la memoria para otros eventos, cuando ptr no es netdev_notifier_changeupper_info. Los registros de KASAN son los siguientes: [30.123165] ERROR: KASAN: pila fuera de los límites en prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera] [30.133336] Lectura de tamaño 8 en la dirección ffff80000cf772b0 mediante tarea udevd/778 [ 0x0/0 x2c0 [ 30.159320] show_stack+0x18/0x30 [ 30.162729] dump_stack_lvl+0x68/0x84 [ 30.166491] print_address_description.constprop.0+0x74/0x2b8 [ 30.172346] kasan_report+0x1e8/0x250 [ 3 0.176102] __asan_load8+0x98/0xe0 [ 30.179682] prestera_netdev_port_event.constprop .0+0x68/0x538 [prestera] [ 30.186847] prestera_netdev_event_handler+0x1b4/0x1c0 [prestera] [ 30.193313] raw_notifier_call_chain+0x74/0xa0 [ 30.197860] call_netdevice_notifiers_info+0x68/0xc0 [ 30.202924] registro_netdevice+0x3cc/0x760 [ 30.207190] registro_netdev+0x24 /0x50 [ 30.211015] prestera_device_register+0x8a0/0xba0 [prestera]"}],"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":"5.14","versionEndExcluding":"5.15.12","matchCriteriaId":"901A6B90-4B30-4E61-9B88-844D6E11AE47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*","matchCriteriaId":"357AA433-37E8-4323-BFB2-3038D6E4B414"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*","matchCriteriaId":"A73429BA-C2D9-4D0C-A75F-06A1CA8B3983"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*","matchCriteriaId":"F621B5E3-E99D-49E7-90B9-EC3B77C95383"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*","matchCriteriaId":"F7BFDCAA-1650-49AA-8462-407DD593F94F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*","matchCriteriaId":"6EC9882F-866D-4ACB-8FBC-213D8D8436C8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:*","matchCriteriaId":"8A0915FE-A4AA-4C94-B783-CF29D81E7E54"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Exploit","Mailing List","Patch"]},{"url":"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Exploit","Mailing List","Patch"]},{"url":"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Patch"]},{"url":"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mailing List","Patch"]}]}}]}