{
  "cveId": "CVE-2026-89743",
  "url": "https://patchblox.com/security/cve/CVE-2026-89743",
  "summary": "CVE-2026-89743 is fixed in 39 products on 1 platform, first by DEBIAN-CVE-2026-89743, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  misc: nsm: bound the device-reported response le...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  misc: nsm: bound the device-reported response length  nsm_sendrecv_msg_locked() stores the virtqueue used-ring length reported by the NSM device into msg-\u003Eresp.len without bounding it to the response buffer. A malicious or buggy backend can report a length larger than the response buffer; parse_resp_raw() then copies that many bytes out of the fixed buffer to user space, disclosing adjacent kernel heap (an out-of-bounds read). The request path already floors its length in fill_req_raw(); the response path lacks the symmetric check.  Clamp the stored length to the size of the response buffer. Well-behaved devices report no more than the posted buffer size, so conforming traffic is unaffected.",
  "published": "2026-09-11T20:20:04Z",
  "severity": "high",
  "cvss": 7.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00142,
  "epssPercentile": 0.03505,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T07:50:38Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}