{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  sunrpc: defer rq_argp and rq_resp free until after RCU grace period  svc_rqst_free() frees rqstp-\u003erq_argp and rqstp-\u003erq_resp synchronously via kfree(), but defers the rqstp struct free via kfree_rcu().  After svc_exit_thread() calls list_del_rcu() and svc_rqst_free(), there is a window where RCU readers that started before list_del_rcu() can still traverse the thread list and find the rqstp.  These readers (e.g. nfsd_nl_rpc_status_get_dumpit()) dereference rqstp-\u003erq_argp, which has already been freed — a use-after-free.  Fix this by moving the kfree of rq_argp and rq_resp into an explicit call_rcu() callback alongside the struct free.  Resources not accessed by RCU readers (bvec, buffer pages, scratch folio, auth_data) remain synchronously freed.",
  "id": "DEBIAN-CVE-2026-89545",
  "modified": "2026-09-14T08:47:44.276658470Z",
  "published": "2026-09-11T20:19:37.840Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89545"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-89545"
  ]
}