{
  "cveId": "CVE-2026-52989",
  "url": "https://patchblox.com/security/cve/CVE-2026-52989",
  "summary": "CVE-2026-52989 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-52989, released June 25, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers  Currently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds PDU length or offset, it triggers nvmet_tcp_fatal_error(cmd-\u003Equeue) and returns early. However, because the function returns void, the callers are entirely unaware that a fatal error has occurred and that the cmd-\u003Erecv_msg.msg_iter was left uninitialized.  Callers such as nvmet_tcp_handle_h2c_data_pdu() proceed to blindly overwrite the queue state with queue-\u003Ercv_state = NVMET_TCP_RECV_DATA Consequently, the socket receiving loop may attempt to read incoming network data into the uninitialized iterator.  Fix this by shifting the error handling responsibility to the callers.",
  "published": "2026-06-24T17:17:09Z",
  "severity": "Critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00356,
  "epssPercentile": 0.29564,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52989",
  "fixes": [
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      "released": "2026-08-12T01:09:28Z"
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      "released": "2026-11-07T00:43:02Z"
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  "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"
  }
}