fkie_cve-2021-47438
Vulnerability from fkie_nvd
Published
2024-05-22 07:15
Modified
2025-01-07 20:14
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path Prior to this patch in case mlx5_core_destroy_cq() failed it returns without completing all destroy operations and that leads to memory leak. Instead, complete the destroy flow before return error. Also move mlx5_debug_cq_remove() to the beginning of mlx5_core_destroy_cq() to be symmetrical with mlx5_core_create_cq(). kmemleak complains on: unreferenced object 0xc000000038625100 (size 64): comm "ethtool", pid 28301, jiffies 4298062946 (age 785.380s) hex dump (first 32 bytes): 60 01 48 94 00 00 00 c0 b8 05 34 c3 00 00 00 c0 `.H.......4..... 02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0 ..........}..... backtrace: [<000000009e8643cb>] add_res_tree+0xd0/0x270 [mlx5_core] [<00000000e7cb8e6c>] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core] [<000000002a12918f>] mlx5_core_create_cq+0x1d0/0x2d0 [mlx5_core] [<00000000cef0a696>] mlx5e_create_cq+0x210/0x3f0 [mlx5_core] [<000000009c642c26>] mlx5e_open_cq+0xb4/0x130 [mlx5_core] [<0000000058dfa578>] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core] [<0000000081839561>] mlx5e_open_channels+0x9cc/0x13e0 [mlx5_core] [<0000000009cf05d4>] mlx5e_switch_priv_channels+0xa4/0x230 [mlx5_core] [<0000000042bbedd8>] mlx5e_safe_switch_params+0x14c/0x300 [mlx5_core] [<0000000004bc9db8>] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core] [<00000000a0553443>] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core] [<00000000a8f3d84b>] ethnl_set_privflags+0x234/0x2d0 [<00000000fd27f27c>] genl_family_rcv_msg_doit+0x108/0x1d0 [<00000000f495e2bb>] genl_family_rcv_msg+0xe4/0x1f0 [<00000000646c5c2c>] genl_rcv_msg+0x78/0x120 [<00000000d53e384e>] netlink_rcv_skb+0x74/0x1a0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CA7083CE-AF63-4A62-9833-F4FF57A65816",
              "versionEndExcluding": "5.10.75",
              "versionStartIncluding": "3.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BF43A331-D430-4B9D-A612-E63C62AE4A86",
              "versionEndExcluding": "5.14.14",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "AF55383D-4DF2-45DC-93F7-571F4F978EAB",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path\n\nPrior to this patch in case mlx5_core_destroy_cq() failed it returns\nwithout completing all destroy operations and that leads to memory leak.\nInstead, complete the destroy flow before return error.\n\nAlso move mlx5_debug_cq_remove() to the beginning of mlx5_core_destroy_cq()\nto be symmetrical with mlx5_core_create_cq().\n\nkmemleak complains on:\n\nunreferenced object 0xc000000038625100 (size 64):\n  comm \"ethtool\", pid 28301, jiffies 4298062946 (age 785.380s)\n  hex dump (first 32 bytes):\n    60 01 48 94 00 00 00 c0 b8 05 34 c3 00 00 00 c0  `.H.......4.....\n    02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0  ..........}.....\n  backtrace:\n    [\u003c000000009e8643cb\u003e] add_res_tree+0xd0/0x270 [mlx5_core]\n    [\u003c00000000e7cb8e6c\u003e] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core]\n    [\u003c000000002a12918f\u003e] mlx5_core_create_cq+0x1d0/0x2d0 [mlx5_core]\n    [\u003c00000000cef0a696\u003e] mlx5e_create_cq+0x210/0x3f0 [mlx5_core]\n    [\u003c000000009c642c26\u003e] mlx5e_open_cq+0xb4/0x130 [mlx5_core]\n    [\u003c0000000058dfa578\u003e] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core]\n    [\u003c0000000081839561\u003e] mlx5e_open_channels+0x9cc/0x13e0 [mlx5_core]\n    [\u003c0000000009cf05d4\u003e] mlx5e_switch_priv_channels+0xa4/0x230\n[mlx5_core]\n    [\u003c0000000042bbedd8\u003e] mlx5e_safe_switch_params+0x14c/0x300\n[mlx5_core]\n    [\u003c0000000004bc9db8\u003e] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core]\n    [\u003c00000000a0553443\u003e] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core]\n    [\u003c00000000a8f3d84b\u003e] ethnl_set_privflags+0x234/0x2d0\n    [\u003c00000000fd27f27c\u003e] genl_family_rcv_msg_doit+0x108/0x1d0\n    [\u003c00000000f495e2bb\u003e] genl_family_rcv_msg+0xe4/0x1f0\n    [\u003c00000000646c5c2c\u003e] genl_rcv_msg+0x78/0x120\n    [\u003c00000000d53e384e\u003e] netlink_rcv_skb+0x74/0x1a0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/mlx5e: corrige la p\u00e9rdida de memoria en la ruta de error mlx5_core_destroy_cq(). Antes de este parche, en caso de que mlx5_core_destroy_cq() fallara, regresa sin completar todas las operaciones de destrucci\u00f3n y eso conduce a una p\u00e9rdida de memoria. En su lugar, complete el flujo de destrucci\u00f3n antes de que se produzca el error de devoluci\u00f3n. Tambi\u00e9n mueva mlx5_debug_cq_remove() al principio de mlx5_core_destroy_cq() para que sea sim\u00e9trico con mlx5_core_create_cq(). kmemleak se queja de: objeto sin referencia 0xc000000038625100 (tama\u00f1o 64): comm \"ethtool\", pid 28301, jiffies 4298062946 (edad 785.380 s) volcado hexadecimal (primeros 32 bytes): 60 01 48 94 00 00 00 c0 b8 05 34 3 00 00 00 c0 `.H.......4..... 02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0 ..........}..... rastreo hacia atr\u00e1s : [\u0026lt;000000009e8643cb\u0026gt;] add_res_tree+0xd0/0x270 [mlx5_core] [\u0026lt;00000000e7cb8e6c\u0026gt;] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core] [\u0026lt;000000002a12918f\u0026gt;] 0x1d0/0x2d0 [mlx5_core] [\u0026lt;00000000cef0a696\u0026gt;] mlx5e_create_cq+0x210/0x3f0 [mlx5_core] [\u0026lt;000000009c642c26\u0026gt;] mlx5e_open_cq+0xb4/0x130 [mlx5_core] [\u0026lt;0000000058dfa578\u0026gt;] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core] [\u0026lt;0000000081839561\u0026gt;] 5e_open_channels+0x9cc/0x13e0 [mlx5_core] [\u0026lt;0000000009cf05d4\u0026gt;] mlx5e_switch_priv_channels+0xa4 /0x230 [mlx5_core] [\u0026lt;0000000042bbedd8\u0026gt;] mlx5e_safe_switch_params+0x14c/0x300 [mlx5_core] [\u0026lt;0000000004bc9db8\u0026gt;] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core [\u0026lt;00000000a] 0553443\u0026gt;] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core] [\u0026lt;00000000a8f3d84b\u0026gt;] etnl_set_privflags +0x234/0x2d0 [\u0026lt;00000000fd27f27c\u0026gt;] genl_family_rcv_msg_doit+0x108/0x1d0 [\u0026lt;00000000f495e2bb\u0026gt;] genl_family_rcv_msg+0xe4/0x1f0 [\u0026lt;00000000646c5c2c\u0026gt;] v_msg+0x78/0x120 [\u0026lt;00000000d53e384e\u0026gt;] netlink_rcv_skb+0x74/0x1a0"
    }
  ],
  "id": "CVE-2021-47438",
  "lastModified": "2025-01-07T20:14:16.923",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-22T07:15:09.080",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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