net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure

{
  "id": "a39f51a15fbda2ad6379a8959784717ba6e32057a53e94560c11dbe84c960c24",
  "url": "https://osv.dev/vulnerability/CVE-2026-98620",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure If register_netdev() fails for one of the MTK_MAX_DEVS devices in mtk_probe(), the error path jumps to err_deinit_ppe, skipping mtk_unreg_dev(). The previously registered net_devices are then freed by mtk_free_dev() while still in NETREG_REGISTERED state, hitting the BUG_ON(dev->reg_state != NETREG_UNREGISTERED). Route the register_netdev() failure to err_unreg_netdev so the net_devices registered so far are properly unregistered before being freed.",
    "evidence": "osv:CVE-2026-98620",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.158",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.55",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98620",
      "aliases": [
        "CVE-2026-98620"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8a8a9e89f801ce5d3d1d57ac48db678caf072147"
                },
                {
                  "fixed": "245bea0c7ab278150c70366bdeb69b901327133c"
                },
                {
                  "fixed": "ab3bde3b3e56331b4f53a1f6cf4e5e9d1c14c1a0"
                },
                {
                  "fixed": "7254b702e556158e34b4d7c168b5d8e7da5978af"
                },
                {
                  "fixed": "0fdb944d4df02223c67d5e65c4c134ecb57a5668"
                },
                {
                  "fixed": "310d1ac61a4d5a2ca8356a3a48d263acf54503ce"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98620.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.9.0"
                },
                {
                  "fixed": "6.6.158"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.112"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.55"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98620.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.877844177Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0fdb944d4df02223c67d5e65c4c134ecb57a5668",
        "https://git.kernel.org/stable/c/245bea0c7ab278150c70366bdeb69b901327133c",
        "https://git.kernel.org/stable/c/310d1ac61a4d5a2ca8356a3a48d263acf54503ce",
        "https://git.kernel.org/stable/c/7254b702e556158e34b4d7c168b5d8e7da5978af",
        "https://git.kernel.org/stable/c/ab3bde3b3e56331b4f53a1f6cf4e5e9d1c14c1a0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98620.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98620",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98620.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98620",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 489296,
  "published_at": "2026-10-18T15:19:40.32+00:00"
}