GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-47438 (GCVE-0-2021-47438)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2026-08-05 08:47
VLAI
Title
net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path
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
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 18:03 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c , < 4f7bddf8c5c01cac74373443b13a68e1c6723a94 (git)
Affected: e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c , < ed8aafea4fec9c654e63445236e0b505e27ed3a7 (git)
Affected: e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c , < 94b960b9deffc02fc0747afc01f72cc62ab099e3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 5.10.75 , ≤ 5.10.* (semver)
Unaffected: 5.14.14 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47438",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-17T18:03:33.416738Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-17T18:04:18.552Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:39:59.306Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/cq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4f7bddf8c5c01cac74373443b13a68e1c6723a94",
              "status": "affected",
              "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
              "versionType": "git"
            },
            {
              "lessThan": "ed8aafea4fec9c654e63445236e0b505e27ed3a7",
              "status": "affected",
              "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
              "versionType": "git"
            },
            {
              "lessThan": "94b960b9deffc02fc0747afc01f72cc62ab099e3",
              "status": "affected",
              "version": "e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/cq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.11"
            },
            {
              "lessThan": "3.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.75",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.14.14",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Reachable only via local interfaces (ethtool/netlink PRIVFLAGS_SET or RDMA uverbs/DEVX CQ destroy on mlx5), not by processing remote network packets.\nAC:L - A local actor who can drive CQ destroy (ethtool priv-flag/channel reconfiguration or IB CQ destroy) can exercise the vulnerable path; no special race or non-attacker-controlled layout is required beyond inducing the destroy error path.\nPR:L - ETHTOOL_MSG_PRIVFLAGS_SET uses GENL_UNS_ADMIN_PERM (CAP_NET_ADMIN in the local user namespace), and mlx5 IB uverbs nodes are mode 0666, so an unprivileged local user can reach CQ destroy without real init-namespace root.\nUI:N - Exploitation requires only attacker-controlled local syscalls/netlink or uverbs operations; no victim action is needed.\nS:U - Impact stays within the host kernel authority (memory leak / UAF); it does not cross VM, IOMMU, or other security boundaries.\nC:H - On the failing destroy path, debugfs CQ entries are left registered while mlx5e frees the CQ object, so subsequent debugfs reads use a dangling pointer (UAF) and can disclose freed kernel memory.\nI:N - The bug is an incomplete teardown/memory leak with a read-only debugfs UAF; there is no demonstrated attacker write or control-flow corruption primitive in this path.\nA:H - The dangling CQ debugfs UAF can oops the kernel on access, and repeated failed destroys leak kernel allocations, so availability impact is high."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:47:48.724Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3"
        }
      ],
      "title": "net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47438",
    "datePublished": "2024-05-22T06:19:33.537Z",
    "dateReserved": "2024-05-21T14:58:30.831Z",
    "dateUpdated": "2026-08-05T08:47:48.724Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-47438",
      "date": "2026-09-16",
      "epss": "0.00233",
      "percentile": "0.14394"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.11\", \"versionEndExcluding\": \"5.10.75\", \"matchCriteriaId\": \"CA7083CE-AF63-4A62-9833-F4FF57A65816\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.14.14\", \"matchCriteriaId\": \"BF43A331-D430-4B9D-A612-E63C62AE4A86\"}, {\"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\"}]}]}]",
      "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\": [{\"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}]}",
      "published": "2024-05-22T07:15:09.080",
      "references": "[{\"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\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"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\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-401\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47438\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-22T07:15:09.080\",\"lastModified\":\"2026-08-04T10:17:03.297\",\"vulnStatus\":\"Modified\",\"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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/mellanox/mlx5/core/cq.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\",\"lessThan\":\"4f7bddf8c5c01cac74373443b13a68e1c6723a94\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\",\"lessThan\":\"ed8aafea4fec9c654e63445236e0b505e27ed3a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\",\"lessThan\":\"94b960b9deffc02fc0747afc01f72cc62ab099e3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/mellanox/mlx5/core/cq.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.75\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.14.14\",\"lessThanOrEqual\":\"5.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2},{\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-17T18:03:33.416738Z\",\"id\":\"CVE-2021-47438\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.11\",\"versionEndExcluding\":\"5.10.75\",\"matchCriteriaId\":\"CA7083CE-AF63-4A62-9833-F4FF57A65816\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.14.14\",\"matchCriteriaId\":\"BF43A331-D430-4B9D-A612-E63C62AE4A86\"},{\"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\"}]}]}],\"references\":[{\"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\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"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\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-14T18:50:20+00:00",
      "cve": "CVE-2021-47438",
      "id": "CVE-2021-47438",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47438.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T02:31:04Z",
      "cve": "CVE-2021-47438",
      "id": "CVE-2021-47438",
      "initial_release_date": "2024-05-25T03:34:19Z",
      "product_status:known_affected": "463",
      "product_status:known_not_affected": "53",
      "product_status:recommended": "537",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47438",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47438.json",
      "version": "69"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:39:59.306Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47438\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T18:03:33.416738Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-17T18:03:34.430Z\"}}], \"cna\": {\"title\": \"net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - Reachable only via local interfaces (ethtool/netlink PRIVFLAGS_SET or RDMA uverbs/DEVX CQ destroy on mlx5), not by processing remote network packets.\\nAC:L - A local actor who can drive CQ destroy (ethtool priv-flag/channel reconfiguration or IB CQ destroy) can exercise the vulnerable path; no special race or non-attacker-controlled layout is required beyond inducing the destroy error path.\\nPR:L - ETHTOOL_MSG_PRIVFLAGS_SET uses GENL_UNS_ADMIN_PERM (CAP_NET_ADMIN in the local user namespace), and mlx5 IB uverbs nodes are mode 0666, so an unprivileged local user can reach CQ destroy without real init-namespace root.\\nUI:N - Exploitation requires only attacker-controlled local syscalls/netlink or uverbs operations; no victim action is needed.\\nS:U - Impact stays within the host kernel authority (memory leak / UAF); it does not cross VM, IOMMU, or other security boundaries.\\nC:H - On the failing destroy path, debugfs CQ entries are left registered while mlx5e frees the CQ object, so subsequent debugfs reads use a dangling pointer (UAF) and can disclose freed kernel memory.\\nI:N - The bug is an incomplete teardown/memory leak with a read-only debugfs UAF; there is no demonstrated attacker write or control-flow corruption primitive in this path.\\nA:H - The dangling CQ debugfs UAF can oops the kernel on access, and repeated failed destroys leak kernel allocations, so availability impact is high.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\", \"lessThan\": \"4f7bddf8c5c01cac74373443b13a68e1c6723a94\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\", \"lessThan\": \"ed8aafea4fec9c654e63445236e0b505e27ed3a7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e126ba97dba9edeb6fafa3665b5f8497fc9cdf8c\", \"lessThan\": \"94b960b9deffc02fc0747afc01f72cc62ab099e3\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/cq.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.14.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlx5/core/cq.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94\"}, {\"url\": \"https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7\"}, {\"url\": \"https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.75\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.14.14\", \"versionStartIncluding\": \"3.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15\", \"versionStartIncluding\": \"3.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:47:48.724Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47438\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:47:48.724Z\", \"dateReserved\": \"2024-05-21T14:58:30.831Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-22T06:19:33.537Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.