{
  "cveId": "CVE-2026-90423",
  "url": "https://patchblox.com/security/cve/CVE-2026-90423",
  "summary": "CVE-2026-90423 is fixed in linux on 1 platform by DEBIAN-CVE-2026-90423 (version 7.2.6-1), 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:  RDMA/rxe: Fix UAF in ODP init error-handling pat...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  RDMA/rxe: Fix UAF in ODP init error-handling path  rxe_odp_mr_init_user() stores \u0026umem_odp-\u003Eumem in mr-\u003Eumem before calling rxe_odp_init_pages(). If rxe_odp_init_pages() fails, rxe_odp_mr_init_user() releases umem_odp and returns an error.  rxe_reg_user_mr() then unwinds the error through rxe_cleanup(), rxe_mr_cleanup(), ib_umem_release(mr-\u003Eumem). There is an IS_ERR_OR_NULL(umem) check at the start of ib_umem_release(). But since mr-\u003Eumem is NOT reset to NULL in the error handling path of rxe_odp_mr_init_user(), the check passes and it reads already-freed fields like umem-\u003Eis_dmabuf, causing UAF.  Fix the UAF by clearing mr-\u003Eumem after releasing the failed ODP umem so the MR cleanup path does not release it again.",
  "published": "2026-09-17T17:17:46Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00173,
  "epssPercentile": 0.06808,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-90423",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90423",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}