cve-2021-47127
Vulnerability from cvelistv5
Published
2024-03-15 20:14
Modified
2024-11-04 11:59
Severity ?
Summary
ice: track AF_XDP ZC enabled queues in bitmap
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.881Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47127",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:55:26.106391Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:32:52.269Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice.h",
            "drivers/net/ethernet/intel/ice/ice_lib.c",
            "drivers/net/ethernet/intel/ice/ice_xsk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1d34fa4fcf06",
              "status": "affected",
              "version": "c7a219048e45",
              "versionType": "git"
            },
            {
              "lessThan": "e102db780e1c",
              "status": "affected",
              "version": "c7a219048e45",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice.h",
            "drivers/net/ethernet/intel/ice/ice_lib.c",
            "drivers/net/ethernet/intel/ice/ice_xsk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: track AF_XDP ZC enabled queues in bitmap\n\nCommit c7a219048e45 (\"ice: Remove xsk_buff_pool from VSI structure\")\nsilently introduced a regression and broke the Tx side of AF_XDP in copy\nmode. xsk_pool on ice_ring is set only based on the existence of the XDP\nprog on the VSI which in turn picks ice_clean_tx_irq_zc to be executed.\nThat is not something that should happen for copy mode as it should use\nthe regular data path ice_clean_tx_irq.\n\nThis results in a following splat when xdpsock is run in txonly or l2fwd\nscenarios in copy mode:\n\n\u003csnip\u003e\n[  106.050195] BUG: kernel NULL pointer dereference, address: 0000000000000030\n[  106.057269] #PF: supervisor read access in kernel mode\n[  106.062493] #PF: error_code(0x0000) - not-present page\n[  106.067709] PGD 0 P4D 0\n[  106.070293] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[  106.074721] CPU: 61 PID: 0 Comm: swapper/61 Not tainted 5.12.0-rc2+ #45\n[  106.081436] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\n[  106.092027] RIP: 0010:xp_raw_get_dma+0x36/0x50\n[  106.096551] Code: 74 14 48 b8 ff ff ff ff ff ff 00 00 48 21 f0 48 c1 ee 30 48 01 c6 48 8b 87 90 00 00 00 48 89 f2 81 e6 ff 0f 00 00 48 c1 ea 0c \u003c48\u003e 8b 04 d0 48 83 e0 fe 48 01 f0 c3 66 66 2e 0f 1f 84 00 00 00 00\n[  106.115588] RSP: 0018:ffffc9000d694e50 EFLAGS: 00010206\n[  106.120893] RAX: 0000000000000000 RBX: ffff88984b8c8a00 RCX: ffff889852581800\n[  106.128137] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff88984cd8b800\n[  106.135383] RBP: ffff888123b50001 R08: ffff889896800000 R09: 0000000000000800\n[  106.142628] R10: 0000000000000000 R11: ffffffff826060c0 R12: 00000000000000ff\n[  106.149872] R13: 0000000000000000 R14: 0000000000000040 R15: ffff888123b50018\n[  106.157117] FS:  0000000000000000(0000) GS:ffff8897e0f40000(0000) knlGS:0000000000000000\n[  106.165332] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  106.171163] CR2: 0000000000000030 CR3: 000000000560a004 CR4: 00000000007706e0\n[  106.178408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  106.185653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  106.192898] PKRU: 55555554\n[  106.195653] Call Trace:\n[  106.198143]  \u003cIRQ\u003e\n[  106.200196]  ice_clean_tx_irq_zc+0x183/0x2a0 [ice]\n[  106.205087]  ice_napi_poll+0x3e/0x590 [ice]\n[  106.209356]  __napi_poll+0x2a/0x160\n[  106.212911]  net_rx_action+0xd6/0x200\n[  106.216634]  __do_softirq+0xbf/0x29b\n[  106.220274]  irq_exit_rcu+0x88/0xc0\n[  106.223819]  common_interrupt+0x7b/0xa0\n[  106.227719]  \u003c/IRQ\u003e\n[  106.229857]  asm_common_interrupt+0x1e/0x40\n\u003c/snip\u003e\n\nFix this by introducing the bitmap of queues that are zero-copy enabled,\nwhere each bit, corresponding to a queue id that xsk pool is being\nconfigured on, will be set/cleared within ice_xsk_pool_{en,dis}able and\nchecked within ice_xsk_pool(). The latter is a function used for\ndeciding which napi poll routine is executed.\nIdea is being taken from our other drivers such as i40e and ixgbe."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T11:59:56.619Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d"
        }
      ],
      "title": "ice: track AF_XDP ZC enabled queues in bitmap",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47127",
    "datePublished": "2024-03-15T20:14:31.658Z",
    "dateReserved": "2024-03-04T18:12:48.839Z",
    "dateUpdated": "2024-11-04T11:59:56.619Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47127\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-15T21:15:07.417\",\"lastModified\":\"2024-03-17T22:38:29.433\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nice: track AF_XDP ZC enabled queues in bitmap\\n\\nCommit c7a219048e45 (\\\"ice: Remove xsk_buff_pool from VSI structure\\\")\\nsilently introduced a regression and broke the Tx side of AF_XDP in copy\\nmode. xsk_pool on ice_ring is set only based on the existence of the XDP\\nprog on the VSI which in turn picks ice_clean_tx_irq_zc to be executed.\\nThat is not something that should happen for copy mode as it should use\\nthe regular data path ice_clean_tx_irq.\\n\\nThis results in a following splat when xdpsock is run in txonly or l2fwd\\nscenarios in copy mode:\\n\\n\u003csnip\u003e\\n[  106.050195] BUG: kernel NULL pointer dereference, address: 0000000000000030\\n[  106.057269] #PF: supervisor read access in kernel mode\\n[  106.062493] #PF: error_code(0x0000) - not-present page\\n[  106.067709] PGD 0 P4D 0\\n[  106.070293] Oops: 0000 [#1] PREEMPT SMP NOPTI\\n[  106.074721] CPU: 61 PID: 0 Comm: swapper/61 Not tainted 5.12.0-rc2+ #45\\n[  106.081436] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\\n[  106.092027] RIP: 0010:xp_raw_get_dma+0x36/0x50\\n[  106.096551] Code: 74 14 48 b8 ff ff ff ff ff ff 00 00 48 21 f0 48 c1 ee 30 48 01 c6 48 8b 87 90 00 00 00 48 89 f2 81 e6 ff 0f 00 00 48 c1 ea 0c \u003c48\u003e 8b 04 d0 48 83 e0 fe 48 01 f0 c3 66 66 2e 0f 1f 84 00 00 00 00\\n[  106.115588] RSP: 0018:ffffc9000d694e50 EFLAGS: 00010206\\n[  106.120893] RAX: 0000000000000000 RBX: ffff88984b8c8a00 RCX: ffff889852581800\\n[  106.128137] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff88984cd8b800\\n[  106.135383] RBP: ffff888123b50001 R08: ffff889896800000 R09: 0000000000000800\\n[  106.142628] R10: 0000000000000000 R11: ffffffff826060c0 R12: 00000000000000ff\\n[  106.149872] R13: 0000000000000000 R14: 0000000000000040 R15: ffff888123b50018\\n[  106.157117] FS:  0000000000000000(0000) GS:ffff8897e0f40000(0000) knlGS:0000000000000000\\n[  106.165332] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[  106.171163] CR2: 0000000000000030 CR3: 000000000560a004 CR4: 00000000007706e0\\n[  106.178408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\n[  106.185653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\n[  106.192898] PKRU: 55555554\\n[  106.195653] Call Trace:\\n[  106.198143]  \u003cIRQ\u003e\\n[  106.200196]  ice_clean_tx_irq_zc+0x183/0x2a0 [ice]\\n[  106.205087]  ice_napi_poll+0x3e/0x590 [ice]\\n[  106.209356]  __napi_poll+0x2a/0x160\\n[  106.212911]  net_rx_action+0xd6/0x200\\n[  106.216634]  __do_softirq+0xbf/0x29b\\n[  106.220274]  irq_exit_rcu+0x88/0xc0\\n[  106.223819]  common_interrupt+0x7b/0xa0\\n[  106.227719]  \u003c/IRQ\u003e\\n[  106.229857]  asm_common_interrupt+0x1e/0x40\\n\u003c/snip\u003e\\n\\nFix this by introducing the bitmap of queues that are zero-copy enabled,\\nwhere each bit, corresponding to a queue id that xsk pool is being\\nconfigured on, will be set/cleared within ice_xsk_pool_{en,dis}able and\\nchecked within ice_xsk_pool(). The latter is a function used for\\ndeciding which napi poll routine is executed.\\nIdea is being taken from our other drivers such as i40e and ixgbe.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ice: rastrear colas habilitadas para AF_XDP ZC en mapa de bits. El commit c7a219048e45 (\\\"ice: Remove xsk_buff_pool from VSI Structure\\\") introdujo silenciosamente una regresi\u00f3n y rompi\u00f3 el lado Tx de AF_XDP en modo de copia. xsk_pool en ice_ring se configura \u00fanicamente en funci\u00f3n de la existencia del programa XDP en la VSI, que a su vez selecciona ice_clean_tx_irq_zc para ejecutarse. Eso no es algo que deber\u00eda suceder en el modo de copia, ya que deber\u00eda usar la ruta de datos normal ice_clean_tx_irq. Esto da como resultado el siguiente s\u00edmbolo cuando xdpsock se ejecuta en escenarios txonly o l2fwd en modo copia:  [ 106.050195] ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000030 [ 106.057269] #PF: acceso de lectura del supervisor en modo kernel [ 106.062493] #PF: error_code(0x0000) - p\u00e1gina no presente [106.067709] PGD 0 P4D 0 [106.070293] Ups: 0000 [#1] PREEMPT SMP NOPTI [106.074721] CPU: 61 PID: 0 Comm: swapper/61 No contaminado 5.12. 0-rc2+ #45 [ 106.081436] Nombre de hardware: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 19/03/2019 [ 106.092027] RIP: 0010:xp_raw_get_dma+0x3 6/0x50 [ 106.096551] C\u00f3digo: 74 14 48 b8 ff ff ff ff ff ff 00 00 48 21 f0 48 c1 ee 30 48 01 c6 48 8b 87 90 00 00 00 48 89 f2 81 e6 ff 0f 00 00 48 c1 ea 0c \u0026lt;48\u0026gt; 8b 04 d0 48 83 e0 fe 4 8 01 f0 c3 66 66 2e 0f 1f 84 00 00 00 00 [ 106.115588] RSP: 0018:ffffc9000d694e50 EFLAGS: 00010206 [ 106.120893] RAX: 0000000000000000 RBX: ffff88984b8c8a00 RCX: ffff889852581800 [ 106.128137] RDX: 0000000000000006 RSI: 000000000000000000 RDI: ffff88984cd8b800 [ 106.135383 ] RBP: ffff888123b50001 R08: ffff889896800000 R09: 0000000000000800 [ 106.142628] R10: 00000000000000000 R11: ffffffff826060c0 R12: 00000000 000000ff [ 106.149872] R13: 0000000000000000 R14: 0000000000000040 R15: ffff888123b50018 [ 106.157117] FS: 0000000000000000(0000) GS:ffff8 897e0f40000(0000) knlGS :0000000000000000 [ 106.165332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 106.171163] CR2: 0000000000000030 CR3: 000000000560a004 CR4: 00000000007706e0 [ 106.178408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000000000 [ 106.185653] DR3: 0000000000000000 0 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 106.192898] PKRU: 55555554 [ 106.195653] Seguimiento de llamadas: [ 106.198143]  [ 106.200196] ice_clean_tx_irq_zc+0x183/0x2a0 [ice] [ 106 .205087] ice_napi_poll+0x3e/0x590 [hielo] [ 106.209356] __napi_poll+0x2a/ 0x160 [ 106.212911] net_rx_action+0xd6/0x200 [ 106.216634] __do_softirq+0xbf/0x29b [ 106.220274] irq_exit_rcu+0x88/0xc0 [ 106.223819] common_interrupt+0x7b/0xa0 [ 106.227719]  [ 106.229857] asm_common_interrupt+0x1e/0x40  Solucione este problema introduciendo el mapa de bits de las colas que est\u00e1n habilitadas para copia cero, donde cada bit, correspondiente a una identificaci\u00f3n de cola en la que se est\u00e1 configurando el grupo xsk, se establecer\u00e1/borrar\u00e1 dentro de ice_xsk_pool_{en,dis}able y se verificar\u00e1 dentro ice_xsk_pool(). Esta \u00faltima es una funci\u00f3n utilizada para decidir qu\u00e9 rutina de encuesta napi se ejecuta. La idea se ha tomado de nuestros otros controladores, como i40e e ixgbe.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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