fkie_cve-2021-47589
Vulnerability from fkie_nvd
Published
2024-06-19 15:15
Modified
2024-11-21 06:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: igbvf: fix double free in `igbvf_probe` In `igbvf_probe`, if register_netdev() fails, the program will go to label err_hw_init, and then to label err_ioremap. In free_netdev() which is just below label err_ioremap, there is `list_for_each_entry_safe` and `netif_napi_del` which aims to delete all entries in `dev->napi_list`. The program has added an entry `adapter->rx_ring->napi` which is added by `netif_napi_add` in igbvf_alloc_queues(). However, adapter->rx_ring has been freed below label err_hw_init. So this a UAF. In terms of how to patch the problem, we can refer to igbvf_remove() and delete the entry before `adapter->rx_ring`. The KASAN logs are as follows: [ 35.126075] BUG: KASAN: use-after-free in free_netdev+0x1fd/0x450 [ 35.127170] Read of size 8 at addr ffff88810126d990 by task modprobe/366 [ 35.128360] [ 35.128643] CPU: 1 PID: 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14 [ 35.129789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 35.131749] Call Trace: [ 35.132199] dump_stack_lvl+0x59/0x7b [ 35.132865] print_address_description+0x7c/0x3b0 [ 35.133707] ? free_netdev+0x1fd/0x450 [ 35.134378] __kasan_report+0x160/0x1c0 [ 35.135063] ? free_netdev+0x1fd/0x450 [ 35.135738] kasan_report+0x4b/0x70 [ 35.136367] free_netdev+0x1fd/0x450 [ 35.137006] igbvf_probe+0x121d/0x1a10 [igbvf] [ 35.137808] ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf] [ 35.138751] local_pci_probe+0x13c/0x1f0 [ 35.139461] pci_device_probe+0x37e/0x6c0 [ 35.165526] [ 35.165806] Allocated by task 366: [ 35.166414] ____kasan_kmalloc+0xc4/0xf0 [ 35.167117] foo_kmem_cache_alloc_trace+0x3c/0x50 [igbvf] [ 35.168078] igbvf_probe+0x9c5/0x1a10 [igbvf] [ 35.168866] local_pci_probe+0x13c/0x1f0 [ 35.169565] pci_device_probe+0x37e/0x6c0 [ 35.179713] [ 35.179993] Freed by task 366: [ 35.180539] kasan_set_track+0x4c/0x80 [ 35.181211] kasan_set_free_info+0x1f/0x40 [ 35.181942] ____kasan_slab_free+0x103/0x140 [ 35.182703] kfree+0xe3/0x250 [ 35.183239] igbvf_probe+0x1173/0x1a10 [igbvf] [ 35.184040] local_pci_probe+0x13c/0x1f0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74a16e062b23332d8db017ff4a41e16279c44411Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79d9b092035dcdbe636b70433149df9cc6db1e49Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8addba6cab94ce01686ea2e80ed1530f9dc33a9aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d0c927a9fb2b4065230936b77b54f857a3754fcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/944b8be08131f5faf2cd2440aa1c24a39a163a54Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6d335a60dc624c0d279333b22c737faa765b028Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cc9b655bb84f1be283293dfea94dff9a31b106acPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ffe1695b678729edec04037e691007900a2b2bebPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/74a16e062b23332d8db017ff4a41e16279c44411Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/79d9b092035dcdbe636b70433149df9cc6db1e49Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8addba6cab94ce01686ea2e80ed1530f9dc33a9aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8d0c927a9fb2b4065230936b77b54f857a3754fcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/944b8be08131f5faf2cd2440aa1c24a39a163a54Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b6d335a60dc624c0d279333b22c737faa765b028Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cc9b655bb84f1be283293dfea94dff9a31b106acPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ffe1695b678729edec04037e691007900a2b2bebPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BCDBDCBF-3E2B-4AF7-952D-EB56D077EBF5",
              "versionEndExcluding": "4.4.296",
              "versionStartIncluding": "2.6.30",
              "vulnerable": true
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              "vulnerable": true
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              "versionEndExcluding": "4.19.222",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "195EBAA1-4CCE-4898-9351-F4A0DBCAA022",
              "versionEndExcluding": "5.4.168",
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              "versionEndExcluding": "5.10.88",
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              "versionEndExcluding": "5.15.11",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigbvf: fix double free in `igbvf_probe`\n\nIn `igbvf_probe`, if register_netdev() fails, the program will go to\nlabel err_hw_init, and then to label err_ioremap. In free_netdev() which\nis just below label err_ioremap, there is `list_for_each_entry_safe` and\n`netif_napi_del` which aims to delete all entries in `dev-\u003enapi_list`.\nThe program has added an entry `adapter-\u003erx_ring-\u003enapi` which is added by\n`netif_napi_add` in igbvf_alloc_queues(). However, adapter-\u003erx_ring has\nbeen freed below label err_hw_init. So this a UAF.\n\nIn terms of how to patch the problem, we can refer to igbvf_remove() and\ndelete the entry before `adapter-\u003erx_ring`.\n\nThe KASAN logs are as follows:\n\n[   35.126075] BUG: KASAN: use-after-free in free_netdev+0x1fd/0x450\n[   35.127170] Read of size 8 at addr ffff88810126d990 by task modprobe/366\n[   35.128360]\n[   35.128643] CPU: 1 PID: 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14\n[   35.129789] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\n[   35.131749] Call Trace:\n[   35.132199]  dump_stack_lvl+0x59/0x7b\n[   35.132865]  print_address_description+0x7c/0x3b0\n[   35.133707]  ? free_netdev+0x1fd/0x450\n[   35.134378]  __kasan_report+0x160/0x1c0\n[   35.135063]  ? free_netdev+0x1fd/0x450\n[   35.135738]  kasan_report+0x4b/0x70\n[   35.136367]  free_netdev+0x1fd/0x450\n[   35.137006]  igbvf_probe+0x121d/0x1a10 [igbvf]\n[   35.137808]  ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf]\n[   35.138751]  local_pci_probe+0x13c/0x1f0\n[   35.139461]  pci_device_probe+0x37e/0x6c0\n[   35.165526]\n[   35.165806] Allocated by task 366:\n[   35.166414]  ____kasan_kmalloc+0xc4/0xf0\n[   35.167117]  foo_kmem_cache_alloc_trace+0x3c/0x50 [igbvf]\n[   35.168078]  igbvf_probe+0x9c5/0x1a10 [igbvf]\n[   35.168866]  local_pci_probe+0x13c/0x1f0\n[   35.169565]  pci_device_probe+0x37e/0x6c0\n[   35.179713]\n[   35.179993] Freed by task 366:\n[   35.180539]  kasan_set_track+0x4c/0x80\n[   35.181211]  kasan_set_free_info+0x1f/0x40\n[   35.181942]  ____kasan_slab_free+0x103/0x140\n[   35.182703]  kfree+0xe3/0x250\n[   35.183239]  igbvf_probe+0x1173/0x1a10 [igbvf]\n[   35.184040]  local_pci_probe+0x13c/0x1f0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: igbvf: corrige double free en `igbvf_probe` En `igbvf_probe`, si Register_netdev() falla, el programa ir\u00e1 a la etiqueta err_hw_init y luego a la etiqueta err_ioremap. En free_netdev(), que est\u00e1 justo debajo de la etiqueta err_ioremap, est\u00e1n `list_for_each_entry_safe` y `netif_napi_del` que tienen como objetivo eliminar todas las entradas en `dev-\u0026gt;napi_list`. El programa ha agregado una entrada `adapter-\u0026gt;rx_ring-\u0026gt;napi` que se agrega mediante `netif_napi_add` en igbvf_alloc_queues(). Sin embargo, adaptador-\u0026gt;rx_ring se ha liberado debajo de la etiqueta err_hw_init. Entonces esto es una UAF. En t\u00e9rminos de c\u00f3mo solucionar el problema, podemos consultar igbvf_remove() y eliminar la entrada antes de `adapter-\u0026gt;rx_ring`. Los registros de KASAN son los siguientes: [35.126075] ERROR: KASAN: use-after-free en free_netdev+0x1fd/0x450 [35.127170] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88810126d990 mediante la tarea modprobe/366 [35.128360] [35.128643] CPU: 1 PID : 366 Comm: modprobe Not tainted 5.15.0-rc2+ #14 [ 35.129789] Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01 /2014 [35.131749] Seguimiento de llamadas: [35.132199] dump_stack_lvl+0x59/0x7b [35.132865] print_address_description+0x7c/0x3b0 [35.133707] ? free_netdev+0x1fd/0x450 [ 35.134378] __kasan_report+0x160/0x1c0 [ 35.135063] ? free_netdev+0x1fd/0x450 [ 35.135738] kasan_report+0x4b/0x70 [ 35.136367] free_netdev+0x1fd/0x450 [ 35.137006] igbvf_probe+0x121d/0x1a10 [igbvf] [ 35.137808 ] ? igbvf_vlan_rx_add_vid+0x100/0x100 [igbvf] [ 35.138751] local_pci_probe+0x13c/0x1f0 [ 35.139461] pci_device_probe+0x37e/0x6c0 [ 35.165526] [ 35.165806] por tarea 366: [35.166414] ____kasan_kmalloc+0xc4/0xf0 [35.167117] foo_kmem_cache_alloc_trace+0x3c/ 0x50 [igbvf] [ 35.168078] igbvf_probe+0x9c5/0x1a10 [igbvf] [ 35.168866] local_pci_probe+0x13c/0x1f0 [ 35.169565] pci_device_probe+0x37e/0x6c0 [ 35.179713 ] [35.179993] Liberado por la tarea 366: [35.180539] kasan_set_track+0x4c/0x80 [ 35.181211] kasan_set_free_info+0x1f/0x40 [ 35.181942] ____kasan_slab_free+0x103/0x140 [ 35.182703] kfree+0xe3/0x250 [ 35.183239] igbvf_probe+0x1173/0x1a10 vf] [35.184040] local_pci_probe+0x13c/0x1f0"
    }
  ],
  "id": "CVE-2021-47589",
  "lastModified": "2024-11-21T06:36:36.933",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-06-19T15:15:53.490",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
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      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
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      "tags": [
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    },
    {
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      "url": "https://git.kernel.org/stable/c/b6d335a60dc624c0d279333b22c737faa765b028"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ffe1695b678729edec04037e691007900a2b2beb"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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