{
  "cveId": "CVE-2026-99056",
  "url": "https://patchblox.com/security/cve/CVE-2026-99056",
  "summary": "CVE-2026-99056 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99056, released October 24, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "strparser: make sure __strp_recv isn\u0027t running before tearing down the parser",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  strparser: make sure __strp_recv isn\u0027t running before tearing down the parser  The comment above strp_done() claims that if strp is stopped, strp_recv will no longer be called. That\u0027s only true if the caller has a mechanism (eg locking) to guarantee that strp_recv() calls that started before strp_stop() have completed by the time we call strp_done().  This adds a dummy lock_sock/release_sock pair to guarantee that any in-flight strp_recv() (which runs under either bh_lock_sock or lock_sock, depending if it\u0027s called from -\u003Esk_data_ready or strp_work) has completed.  Only espintcp can be affected by this race condition, but this patch makes sure no future user of strp can have the bug.  This could crash on strp-\u003Esk (\u0022general mode\u0022 of strp), but this mode has been here for 9 years and has never been used. It\u0027ll be gone soon, no point worrying about it.  Switch the stopped/paused/etc bits to u8\u0027s to avoid races between strp_stop() and strp_pause/unpause().  A reproducer has been published and turns the possible UAF into an exploit [1].",
  "published": "2026-10-23T13:17:29Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00164,
  "epssPercentile": 0.05643,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99056",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-99056",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99056",
      "released": "2026-10-24T13:25:57Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.11-1",
      "fix": "DEBIAN-CVE-2026-99056",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99056",
      "released": "2026-10-24T13:25:57Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}