{
  "cveId": "CVE-2026-90104",
  "url": "https://patchblox.com/security/cve/CVE-2026-90104",
  "summary": "CVE-2026-90104 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-90104, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "NFSv4.1: zero referring call lists before decoding",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  NFSv4.1: zero referring call lists before decoding  decode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so each referring_call_list starts uninitialized. decode_rc_list() assigns rcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero referring calls therefore leaves the pointer uninitialized, and nfs4_callback_sequence() later passes stale slab contents to kfree().  Allocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is NULL from the beginning, including valid empty referring call lists.",
  "published": "2026-09-17T17:17:02Z",
  "severity": "Moderate",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.0073,
  "epssPercentile": 0.54506,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90104",
  "fixes": [
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  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}