{
  "cveId": "CVE-2026-72431",
  "url": "https://patchblox.com/security/cve/CVE-2026-72431",
  "summary": "CVE-2026-72431 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72431 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  alloc_tag: fix use-after-free in /proc/allocinfo...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  alloc_tag: fix use-after-free in /proc/allocinfo after module unload  allocinfo_start() only reinitializes the codetag iterator at position 0.  For subsequent reads (position \u003E 0), it reuses cached iterator state from the previous batch.  allocinfo_stop() drops mod_lock between read batches, which allows module unload to complete and free the module memory that the cached iterator still references:    CPU0 (read)                        CPU1 (rmmod)   ----                               ----   allocinfo_start(pos=0)     down_read(mod_lock)     allocinfo_show()     ...   allocinfo_stop()     up_read(mod_lock)                                      codetag_unload_module()                                        kfree(cmod)                                        release_module_tags()                                      ...                                      free_mod_mem()   allocinfo_start(pos=N)     down_read(mod_lock)     // reuses cached iter, skips re-init   allocinfo_show()     ct-\u003Efilename   \u003C-- UAF  After free_mod_mem() frees the module\u0027s .rodata, allocinfo_show() dereferences ct-\u003Efilename, ct-\u003Efunction which point there.  Save the iterator state in allocinfo_next() and resume from it in allocinfo_start() with codetag_next_ct(), which detects module removal via idr_find() returning NULL and skips to the next module.",
  "published": "2026-08-15T06:22:16Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10786,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-72431",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-72431",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}