{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a319d0c8c8cede3b63538c9f111f84651d078bf6"
            },
            {
              "fixed": "cf52622fbc274eb4ca9a2066b258da2ae3dc7406"
            },
            {
              "fixed": "bcb3b8314611ed9cb4ff4bff484ef9b154fd1b83"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.1.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72411.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mxl862xx: fix use-after-free of DSA ports in crc_err_work\n\nUpon an MDIO CRC error mxl862xx_crc_err_work_fn() walks the DSA ports\nand closes the CPU port conduits:\n\n\tdsa_switch_for_each_cpu_port(dp, priv-\u003eds)\n\t\tdev_close(dp-\u003econduit);\n\nmxl862xx_remove() unregisters the switch before cancelling this work:\n\n\tset_bit(MXL862XX_FLAG_WORK_STOPPED, \u0026priv-\u003eflags);\n\tcancel_delayed_work_sync(\u0026priv-\u003estats_work);\n\tdsa_unregister_switch(ds);\n\tmxl862xx_host_shutdown(priv);\n\ndsa_unregister_switch() frees the dsa_port objects. If a CRC error\nschedules the work during teardown it can run after the ports have been\nfreed and dereference freed memory.\n\nGuard the port walk with MXL862XX_FLAG_WORK_STOPPED, which is already set\nbefore dsa_unregister_switch(). DSA tears the ports down under\nrtnl_lock(), so checking the flag under rtnl_lock() means the work either\nruns before teardown and sees valid ports, or runs afterwards, observes\nthe flag and skips the walk. This mirrors the host_flood_work handler,\nwhich skips torn-down ports under rtnl_lock().",
  "id": "CVE-2026-72411",
  "modified": "2026-08-18T03:31:17.623518552Z",
  "published": "2026-08-15T05:56:33.508Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcb3b8314611ed9cb4ff4bff484ef9b154fd1b83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf52622fbc274eb4ca9a2066b258da2ae3dc7406"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72411"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: dsa: mxl862xx: fix use-after-free of DSA ports in crc_err_work"
}