{
  "cveId": "CVE-2026-53234",
  "url": "https://patchblox.com/security/cve/CVE-2026-53234",
  "summary": "CVE-2026-53234 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-53234, released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: ibm: emac: Fix use-after-free during device...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: ibm: emac: Fix use-after-free during device removal  The driver was using devm_register_netdev() which causes unregister_netdev() to be deferred until the devres cleanup phase, which runs after emac_remove() returns. This creates a use-after-free window where:  1. emac_remove() is called, which tears down hardware (cancels work, detaches    modules, unregisters from MAL) 2. emac_remove() returns 3. devres cleanup runs and finally calls unregister_netdev()  During step 3, the network stack might still process packets, triggering emac_irq(), emac_poll(), or other handlers that access now-freed hardware resources (dev-\u003Eemacp, dev-\u003Emal, etc.).  Fix this by replacing devm_register_netdev() with manual register_netdev() and calling unregister_netdev() at the beginning of emac_remove(), before any hardware teardown. This ensures the network device is fully stopped and unregistered before hardware resources are released.  The change is safe because: - dev-\u003Endev is assigned very early in probe (before any error paths that   could bypass emac_remove) - platform_set_drvdata() is only called after successful registration, so   emac_remove() only runs for fully registered devices - unregister_netdev() is idempotent and safe to call on any registered device",
  "published": "2026-06-25T09:16:41Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00179,
  "epssPercentile": 0.07481,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.94-1",
      "fix": "DEBIAN-CVE-2026-53234",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53234",
      "released": "2026-06-25T17:23:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.13-1",
      "fix": "DEBIAN-CVE-2026-53234",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53234",
      "released": "2026-06-25T17:23:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}