{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7f46a0b7327ae261f9981888708dbca22c283900"
            },
            {
              "fixed": "a3db46d5f4df92630a96f7bc77b60e75c2353e06"
            },
            {
              "fixed": "7129632cab3e4d23510b21930aa73b8d97a859f5"
            },
            {
              "fixed": "cfa774e6c920c81e700327bf10db8cb50d5db456"
            },
            {
              "fixed": "c53cf44588a93000f71817a6bb87a66353c48dee"
            },
            {
              "fixed": "89c65f2fcd8801365b410f40a427cbcd7f4c28e9"
            },
            {
              "fixed": "bf16bca6653679d8a514d6c1c5a2c67065033f14"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43013.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: lag: Check for LAG device before creating debugfs\n\n__mlx5_lag_dev_add_mdev() may return 0 (success) even when an error\noccurs that is handled gracefully. Consequently, the initialization\nflow proceeds to call mlx5_ldev_add_debugfs() even when there is no\nvalid LAG context.\n\nmlx5_ldev_add_debugfs() blindly created the debugfs directory and\nattributes. This exposed interfaces (like the members file) that rely on\na valid ldev pointer, leading to potential NULL pointer dereferences if\naccessed when ldev is NULL.\n\nAdd a check to verify that mlx5_lag_dev(dev) returns a valid pointer\nbefore attempting to create the debugfs entries.",
  "id": "CVE-2026-43013",
  "modified": "2026-07-08T05:36:25.197937802Z",
  "published": "2026-05-01T14:15:18.907Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43013.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43013"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "net/mlx5: lag: Check for LAG device before creating debugfs"
}