nvd-json-data-feeds/CVE-2021/CVE-2021-471xx/CVE-2021-47197.json

{
  "id": "CVE-2021-47197",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-04-10T19:15:47.940",
  "lastModified": "2025-03-21T12:03:49.537",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()\n\nPrior to this patch in case mlx5_core_destroy_cq() failed it proceeds\nto rest of destroy operations. mlx5_core_destroy_cq() could be called again\nby user and cause additional call of mlx5_debug_cq_remove().\ncq->dbg was not nullify in previous call and cause the crash.\n\nFix it by nullify cq->dbg pointer after removal.\n\nAlso proceed to destroy operations only if FW return 0\nfor MLX5_CMD_OP_DESTROY_CQ command.\n\ngeneral protection fault, probably for non-canonical address 0x2000300004058: 0000 [#1] SMP PTI\nCPU: 5 PID: 1228 Comm: python Not tainted 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:lockref_get+0x1/0x60\nCode: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02\n00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 <48> 8b 17\n48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48\nRSP: 0018:ffff888137dd7a38 EFLAGS: 00010206\nRAX: 0000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe\nRDX: 000000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058\nRBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000\nR13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0\nFS:  00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0\nCall Trace:\n  simple_recursive_removal+0x33/0x2e0\n  ? debugfs_remove+0x60/0x60\n  debugfs_remove+0x40/0x60\n  mlx5_debug_cq_remove+0x32/0x70 [mlx5_core]\n  mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core]\n  devx_obj_cleanup+0x151/0x330 [mlx5_ib]\n  ? __pollwait+0xd0/0xd0\n  ? xas_load+0x5/0x70\n  ? xa_load+0x62/0xa0\n  destroy_hw_idr_uobject+0x20/0x80 [ib_uverbs]\n  uverbs_destroy_uobject+0x3b/0x360 [ib_uverbs]\n  uobj_destroy+0x54/0xa0 [ib_uverbs]\n  ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs]\n  ? uverbs_finalize_object+0xd0/0xd0 [ib_uverbs]\n  ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs]\n  __x64_sys_ioctl+0x3e4/0x8e0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: anular el puntero cq-&gt;dbg en mlx5_debug_cq_remove() Antes de este parche, en caso de que mlx5_core_destroy_cq() fallara, se proced\u00eda al resto de las operaciones de destrucci\u00f3n. El usuario pod\u00eda volver a llamar a mlx5_core_destroy_cq() y provocar una llamada adicional de mlx5_debug_cq_remove(). cq-&gt;dbg no se anul\u00f3 en la llamada anterior y provoc\u00f3 el bloqueo. Arr\u00e9glelo anulando el puntero cq-&gt;dbg despu\u00e9s de la eliminaci\u00f3n. Tambi\u00e9n proceda a destruir las operaciones solo si el firmware devuelve 0 para el comando MLX5_CMD_OP_DESTROY_CQ. Fallo de protecci\u00f3n general, probablemente por direcci\u00f3n no can\u00f3nica 0x2000300004058:0000 [#1] SMP PTI CPU: 5 PID: 1228 Comm: python No contaminado 5.15.0-rc5_for_upstream_min_debug_2021_10_14_11_06 #1 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:lockref_get+0x1/0x60 C\u00f3digo: 5d e9 53 ff ff ff 48 8d 7f 70 e8 0a 2e 48 00 c7 85 d0 00 00 00 02 00 00 00 c6 45 70 00 fb 5d c3 c3 cc cc cc cc cc cc cc cc 53 &lt;48&gt; 8b 17 48 89 fb 85 d2 75 3d 48 89 d0 bf 64 00 00 00 48 89 c1 48 RSP: 0018:ffff888137dd7a38 EFLAGS: 00010206 RAX: 000000000000000 RBX: ffff888107d5f458 RCX: 00000000fffffffe RDX: 00000000002c2b0 RSI: ffffffff8155e2e0 RDI: 0002000300004058 RBP: ffff888137dd7a88 R08: 0002000300004058 R09: ffff8881144a9f88 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881141d4000 R13: ffff888137dd7c68 R14: ffff888137dd7d58 R15: ffff888137dd7cc0 FS: 00007f4644f2a4c0(0000) GS:ffff8887a2d40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b4500f4380 CR3: 0000000114f7a003 CR4: 0000000000170ea0 Seguimiento de llamadas: simple_recursive_removal+0x33/0x2e0 ? debugfs_remove+0x60/0x60 debugfs_remove+0x40/0x60 mlx5_debug_cq_remove+0x32/0x70 [mlx5_core] mlx5_core_destroy_cq+0x41/0x1d0 [mlx5_core] devx_obj_cleanup+0x151/0x330 [mlx5_ib] ? __pollwait+0xd0/0xd0 ? xas_load+0x5/0x70 ? uverbs_destruir_uobject+0x3b/0x360 [ib_uverbs] uobj_destruir+0x54/0xa0 [ib_uverbs] ib_uverbs_cmd_verbs+0xaf2/0x1160 [ib_uverbs] ? uverbs_finalizar_objeto+0xd0/0xd0 [ib_uverbs] ib_uverbs_ioctl+0xc4/0x1b0 [ib_uverbs] __x64_sys_ioctl+0x3e4/0x8e0"
    }
  ],
  "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:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.10.75",
              "versionEndExcluding": "5.10.82",
              "matchCriteriaId": "0EA39C97-5A1D-43F9-A83A-B0BDD31139B8"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.11",
              "versionEndExcluding": "5.15.5",
              "matchCriteriaId": "2128A085-4C0C-4C1E-9E9C-0DD868E2170F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2ae38157080616a13a9fe3f0b4b6ec0070aa408a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}