{
  "cveId": "CVE-2025-39809",
  "url": "https://patchblox.com/security/cve/CVE-2025-39809",
  "summary": "CVE-2025-39809 is fixed in linux on 1 platform by DEBIAN-CVE-2025-39809 (version 6.16.5-1), released September 16, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length  The QuickI2C ACPI _DSD methods return ICRS and ISUB data with a trailing byte, making the actual length is one more byte than the structs defined.  It caused stack-out-of-bounds and kernel crash:  kernel: BUG: KASAN: stack-out-of-bounds in quicki2c_acpi_get_dsd_property.constprop.0\u002B0x111/0x1b0 [intel_quicki2c] kernel: Write of size 12 at addr ffff888106d1f900 by task kworker/u33:2/75 kernel: kernel: CPU: 3 UID: 0 PID: 75 Comm: kworker/u33:2 Not tainted 6.16.0\u002B #3 PREEMPT(voluntary) kernel: Workqueue: async async_run_entry_fn kernel: Call Trace: kernel:  \u003CTASK\u003E kernel:  dump_stack_lvl\u002B0x76/0xa0 kernel:  print_report\u002B0xd1/0x660 kernel:  ? __pfx__raw_spin_lock_irqsave\u002B0x10/0x10 kernel:  ? __kasan_slab_free\u002B0x5d/0x80 kernel:  ? kasan_addr_to_slab\u002B0xd/0xb0 kernel:  kasan_report\u002B0xe1/0x120 kernel:  ? quicki2c_acpi_get_dsd_property.constprop.0\u002B0x111/0x1b0 [intel_quicki2c] kernel:  ? quicki2c_acpi_get_dsd_property.constprop.0\u002B0x111/0x1b0 [intel_quicki2c] kernel:  kasan_check_range\u002B0x11c/0x200 kernel:  __asan_memcpy\u002B0x3b/0x80 kernel:  quicki2c_acpi_get_dsd_property.constprop.0\u002B0x111/0x1b0 [intel_quicki2c] kernel:  ? __pfx_quicki2c_acpi_get_dsd_property.constprop.0\u002B0x10/0x10 [intel_quicki2c] kernel:  quicki2c_get_acpi_resources\u002B0x237/0x730 [intel_quicki2c] [...] kernel:  \u003C/TASK\u003E kernel: kernel: The buggy address belongs to stack of task kworker/u33:2/75 kernel:  and is located at offset 48 in frame: kernel:  quicki2c_get_acpi_resources\u002B0x0/0x730 [intel_quicki2c] kernel: kernel: This frame has 3 objects: kernel:  [32, 36) \u0027hid_desc_addr\u0027 kernel:  [48, 59) \u0027i2c_param\u0027 kernel:  [80, 224) \u0027i2c_config\u0027  ACPI DSD methods return:  \\_SB.PC00.THC0.ICRS Buffer       000000003fdc947b 001 Len 0C = 0A 00 80 1A 06 00 00 00 00 00 00 00 \\_SB.PC00.THC0.ISUB Buffer       00000000f2fcbdc4 001 Len 91 = 00 00 00 00 00 00 00 00 00 00 00 00  Adding reserved padding to quicki2c_subip_acpi_parameter/config.",
  "published": "2025-09-16T13:15:52Z",
  "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": 0.00158,
  "epssPercentile": 0.0502,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.16.5-1",
      "fix": "DEBIAN-CVE-2025-39809",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-39809",
      "released": "2025-09-16T13:15:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}