{
  "cveId": "CVE-2026-31728",
  "url": "https://patchblox.com/security/cve/CVE-2026-31728",
  "summary": "CVE-2026-31728 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-31728, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  usb: gadget: u_ether: Fix race between gether_di...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  usb: gadget: u_ether: Fix race between gether_disconnect and eth_stop  A race condition between gether_disconnect() and eth_stop() leads to a NULL pointer dereference. Specifically, if eth_stop() is triggered concurrently while gether_disconnect() is tearing down the endpoints, eth_stop() attempts to access the cleared endpoint descriptor, causing the following NPE:    Unable to handle kernel NULL pointer dereference   Call trace:    __dwc3_gadget_ep_enable\u002B0x60/0x788    dwc3_gadget_ep_enable\u002B0x70/0xe4    usb_ep_enable\u002B0x60/0x15c    eth_stop\u002B0xb8/0x108  Because eth_stop() crashes while holding the dev-\u003Elock, the thread running gether_disconnect() fails to acquire the same lock and spins forever, resulting in a hardlockup:    Core - Debugging Information for Hardlockup core(7)   Call trace:    queued_spin_lock_slowpath\u002B0x94/0x488    _raw_spin_lock\u002B0x64/0x6c    gether_disconnect\u002B0x19c/0x1e8    ncm_set_alt\u002B0x68/0x1a0    composite_setup\u002B0x6a0/0xc50  The root cause is that the clearing of dev-\u003Eport_usb in gether_disconnect() is delayed until the end of the function.  Move the clearing of dev-\u003Eport_usb to the very beginning of gether_disconnect() while holding dev-\u003Elock. This cuts off the link immediately, ensuring eth_stop() will see dev-\u003Eport_usb as NULL and safely bail out.",
  "published": "2026-05-01T15:16:35Z",
  "severity": "medium",
  "cvss": 4.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00089,
  "epssPercentile": 0.00401,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.37.1",
      "fix": "OPENSUSE-SU-2026:21555-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21555-1",
      "released": "2026-08-12T01:09:28Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.37.1",
      "fix": "OPENSUSE-SU-2026:21555-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21555-1",
      "released": "2026-08-12T01:09:28Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.73.2",
      "fix": "SUSE-SU-2026:3166-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3166-1",
      "released": "2026-07-21T17:09:27Z"
    },
    {
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      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.37.1",
      "fix": "SUSE-SU-2026:23231-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23231-1",
      "released": "2026-08-11T21:26:34Z"
    },
    {
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      "product": "kernel-azure",
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      "fix": "OPENSUSE-SU-2026:21555-1",
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      "released": "2026-08-12T01:09:28Z"
    },
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      "fix": "SUSE-SU-2026:3166-1",
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      "released": "2026-07-21T17:09:27Z"
    },
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      "fix": "OPENSUSE-SU-2026:21555-1",
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      "fix": "SUSE-SU-2026:23237-1",
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      "released": "2026-08-11T21:34:22Z"
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      "fix": "OPENSUSE-SU-2026:21555-1",
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}