CVE-2021-47102
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-12-19 07:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix incorrect structure access In line: upper = info->upper_dev; We access upper_dev field, which is related only for particular events (e.g. event == NETDEV_CHANGEUPPER). So, this line cause invalid memory access for another events, when ptr is not netdev_notifier_changeupper_info. The KASAN logs are as follows: [ 30.123165] BUG: KASAN: stack-out-of-bounds in prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera] [ 30.133336] Read of size 8 at addr ffff80000cf772b0 by task udevd/778 [ 30.139866] [ 30.141398] CPU: 0 PID: 778 Comm: udevd Not tainted 5.16.0-rc3 #6 [ 30.147588] Hardware name: DNI AmazonGo1 A7040 board (DT) [ 30.153056] Call trace: [ 30.155547] dump_backtrace+0x0/0x2c0 [ 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 [ 30.176102] __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] register_netdevice+0x3cc/0x760 [ 30.207190] register_netdev+0x24/0x50 [ 30.211015] prestera_device_register+0x8a0/0xba0 [prestera]
Impacted products
Vendor Product Version
Linux Linux Version: 5.14
Show details on NVD website


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      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "drivers/net/ethernet/marvell/prestera/prestera_main.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
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               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
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                     status: "affected",
                     version: "5.14",
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                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
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                  {
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                     status: "unaffected",
                     version: "5.15.12",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "5.16",
                     versionType: "original_commit_for_fix",
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         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]",
            },
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            dateUpdated: "2024-12-19T07:35:16.339Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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               url: "https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb",
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         title: "net: marvell: prestera: fix incorrect structure access",
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   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2021-47102",
      datePublished: "2024-03-04T18:10:56.018Z",
      dateReserved: "2024-02-29T22:33:44.301Z",
      dateUpdated: "2024-12-19T07:35:16.339Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      fkie_nvd: {
         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 l\\u00ednea: superior = info->upper_dev; Accedemos al campo Upper_dev, que est\\u00e1 relacionado s\\u00f3lo para eventos particulares (por ejemplo, evento == NETDEV_CHANGEUPPER). Entonces, esta l\\u00ednea causa un acceso no v\\u00e1lido 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 l\\u00edmites en prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera] [30.133336] Lectura de tama\\u00f1o 8 en la direcci\\u00f3n 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]\"}]",
         id: "CVE-2021-47102",
         lastModified: "2024-11-21T06:35:24.150",
         published: "2024-03-04T18:15:08.600",
         references: "[{\"url\": \"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
         sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         vulnStatus: "Awaiting Analysis",
      },
      nvd: "{\"cve\":{\"id\":\"CVE-2021-47102\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:08.600\",\"lastModified\":\"2024-11-21T06:35:24.150\",\"vulnStatus\":\"Awaiting Analysis\",\"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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2efc2256febf214e7b2bdaa21fe6c3c3146acdcb\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/5c553a0cd1263e4da5f220d80fa713fc3959c1d0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
   },
}


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