{
  "cveId": "CVE-2026-31652",
  "url": "https://patchblox.com/security/cve/CVE-2026-31652",
  "summary": "CVE-2026-31652 is fixed in linux on 1 platform by DEBIAN-CVE-2026-31652 (version 6.19.13-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm/damon/stat: deallocate damon_call() failure l...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm/damon/stat: deallocate damon_call() failure leaking damon_ctx  damon_stat_start() always allocates the module\u0027s damon_ctx object (damon_stat_context).  Meanwhile, if damon_call() in the function fails, the damon_ctx object is not deallocated.  Hence, if the damon_call() is failed, and the user writes Y to \u201Cenabled\u201D again, the previously allocated damon_ctx object is leaked.  This cannot simply be fixed by deallocating the damon_ctx object when damon_call() fails.  That\u0027s because damon_call() failure doesn\u0027t guarantee the kdamond main function, which accesses the damon_ctx object, is completely finished.  In other words, if damon_stat_start() deallocates the damon_ctx object after damon_call() failure, the not-yet-terminated kdamond could access the freed memory (use-after-free).  Fix the leak while avoiding the use-after-free by keeping returning damon_stat_start() without deallocating the damon_ctx object after damon_call() failure, but deallocating it when the function is invoked again and the kdamond is completely terminated.  If the kdamond is not yet terminated, simply return -EAGAIN, as the kdamond will soon be terminated.  The issue was discovered [1] by sashiko.",
  "published": "2026-04-24T15:16:44Z",
  "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": 0.00115,
  "epssPercentile": 0.0157,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.13-1",
      "fix": "DEBIAN-CVE-2026-31652",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31652",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "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"
  }
}