{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f0703c80e5156406ad947cb67fe277725b48080f"
            },
            {
              "fixed": "5f08c5e50bcb4680069bd3f9edd5728308816ded"
            },
            {
              "fixed": "c24faf11bd31bfe0500aca12cbdd5a573a954a5d"
            },
            {
              "fixed": "99ddb33748698296a6f17b9b34aa3d16a406bb3c"
            },
            {
              "fixed": "23658b350b4107e8292045c2044983fd426fa15d"
            },
            {
              "fixed": "a5bbaddf69853117f28173c3f5c8fc14c6b2ec82"
            },
            {
              "fixed": "900cd6d8119b7f3ae5c4bf82f922ff5957df43db"
            },
            {
              "fixed": "f579582c03ed526281a8450159baf1d35099a85f"
            },
            {
              "fixed": "be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.24"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68140.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/iucv: fix use-after-free of a severed iucv_path\n\naf_iucv queues not-yet-received message notifications on iucv-\u003emessage_q,\neach holding a raw pointer to the connection's iucv_path.  When the peer\nsevers the connection, iucv_sever_path() frees that path with\niucv_path_free() but leaves the notifications queued.  A later recvmsg()\ndrains message_q via iucv_process_message_q() and hands the stale path to\nmessage_receive() -- a use-after-free of the freed iucv_path.\n\nDrop the queued notifications when the path is severed; once the path is\ngone they can no longer be received.  This also frees the notifications\nleaked when a socket is closed with messages still queued.",
  "id": "CVE-2026-68140",
  "modified": "2026-08-21T03:30:35.318256408Z",
  "published": "2026-08-10T11:59:03.761Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23658b350b4107e8292045c2044983fd426fa15d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f08c5e50bcb4680069bd3f9edd5728308816ded"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/900cd6d8119b7f3ae5c4bf82f922ff5957df43db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99ddb33748698296a6f17b9b34aa3d16a406bb3c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a5bbaddf69853117f28173c3f5c8fc14c6b2ec82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be7cc4656eb1f54029610e82d1f0fdd3f9b5ec0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c24faf11bd31bfe0500aca12cbdd5a573a954a5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f579582c03ed526281a8450159baf1d35099a85f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68140.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68140"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/iucv: fix use-after-free of a severed iucv_path"
}