CVE-2026-98620 (GCVE-0-2026-98620)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:19 – Updated: 2026-10-19 09:22
VLAI
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 , < 245bea0c7ab278150c70366bdeb69b901327133c (git)
Affected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 , < ab3bde3b3e56331b4f53a1f6cf4e5e9d1c14c1a0 (git)
Affected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 , < 7254b702e556158e34b4d7c168b5d8e7da5978af (git)
Affected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 , < 0fdb944d4df02223c67d5e65c4c134ecb57a5668 (git)
Affected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 , < 310d1ac61a4d5a2ca8356a3a48d263acf54503ce (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mediatek/mtk_eth_soc.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure\n\nIf register_netdev() fails for one of the MTK_MAX_DEVS devices in\nmtk_probe(), the error path jumps to err_deinit_ppe, skipping\nmtk_unreg_dev(). The previously registered net_devices are then freed by\nmtk_free_dev() while still in NETREG_REGISTERED state, hitting the\nBUG_ON(dev-\u003ereg_state != NETREG_UNREGISTERED).\n\nRoute the register_netdev() failure to err_unreg_netdev so the net_devices\nregistered so far are properly unregistered before being freed."
        }
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      "providerMetadata": {
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    "datePublished": "2026-10-18T15:19:40.320Z",
    "dateReserved": "2026-09-25T10:25:14.360Z",
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    "state": "PUBLISHED"
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          }
        ],
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98620.json",
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    }
  }
}



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