{
  "cveId": "CVE-2026-80563",
  "url": "https://patchblox.com/security/cve/CVE-2026-80563",
  "summary": "CVE-2026-80563 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-80563, released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  gpio: sloppy-logic-analyzer: fix use-after-free...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  gpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind  The \u0022trigger\u0022 debugfs file has a hand-rolled -\u003Ewrite handler (trigger_write()) that dereferences the per-device gpio_la_poll_priv. The file is created with debugfs_create_file_unsafe(), and the handler never takes a debugfs reference. Nothing keeps the object alive while the handler runs.  priv is allocated with devm_kzalloc(). devres frees it when the platform device is unbound. debugfs_create_file_unsafe() installs no full_proxy wrapper, so debugfs_remove_recursive() in gpio_la_poll_remove() does not wait for an in-flight trigger_write(). The blob_lock taken there does not help, because trigger_write() never takes it. A write that races an unbind therefore writes into freed memory:    trigger_write()                  gpio_la_poll_remove()     priv = m-\u003Eprivate     buf = memdup_user()  [may sleep]                                      mutex_lock(\u0026priv-\u003Eblob_lock)                                      debugfs_remove_recursive()  [no wait]                                      mutex_unlock(\u0026priv-\u003Eblob_lock)                                    (remove returns; devres frees priv)     priv-\u003Etrig_data = buf   \u003C-- use-after-free write     priv-\u003Etrig_len  = count  The race is reachable by root via /sys/bus/platform/drivers/gpio-sloppy-logic-analyzer/unbind.  Create \u0022trigger\u0022 with debugfs_create_file() instead. Its full_proxy wrapper makes debugfs_remove_recursive() drain any in-flight -\u003Ewrite before it returns.  The use-after-free is confirmed under KASAN with a minimal reproducer of the same debugfs_create_file_unsafe() plus devm_kzalloc() pattern (available on request); it produces a slab-use-after-free write in the handler.",
  "published": "2026-08-26T15:17:11Z",
  "severity": "",
  "epss": 0.00168,
  "epssPercentile": 0.06121,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.105-1",
      "fix": "DEBIAN-CVE-2026-80563",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80563",
      "released": "2026-08-27T00:27:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.10-1",
      "fix": "DEBIAN-CVE-2026-80563",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80563",
      "released": "2026-08-27T00:27:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.107-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-80563",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80563",
      "released": "2026-08-27T00:27:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}