{
  "cveId": "CVE-2026-68397",
  "url": "https://patchblox.com/security/cve/CVE-2026-68397",
  "summary": "CVE-2026-68397 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2026-68397, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "net/iucv: take a reference on the socket found in afiucv_hs_rcv()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net/iucv: take a reference on the socket found in afiucv_hs_rcv()  afiucv_hs_rcv() looks up the destination socket under iucv_sk_list.lock, drops the lock, and then passes the socket to the afiucv_hs_callback_*() handlers without holding a reference. AF_IUCV sockets are not RCU-protected and are freed synchronously by iucv_sock_kill() -\u003E sock_put(), so a concurrent close can free the socket in the window between read_unlock() and the handler, which then dereferences freed memory (for example sk-\u003Esk_data_ready() in afiucv_hs_callback_syn()).  Take a reference with sock_hold() while the socket is still on the list and release it with sock_put() once the handler has run.",
  "published": "2026-08-10T13:20:33Z",
  "severity": "Moderate",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00263,
  "epssPercentile": 0.18242,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68397",
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