{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3881ac441f642d56503818123446f7298442236b"
            },
            {
              "fixed": "8bb111f87ded6acb9837ec9b45d6f02cda94c51f"
            },
            {
              "fixed": "46453b16f38ec7147351f7447e2aec6ea330f7b3"
            },
            {
              "fixed": "33736ff5e7c97d3348ce812e8bd2e125d840743c"
            },
            {
              "fixed": "0e857185591fe79934427c9c0c1c31dc776be134"
            },
            {
              "fixed": "47a5116e56a6b6fe1e909f244e39cd0fc26ceee4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "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-2026-68141.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/af_iucv: fix NULL deref in afiucv_hs_callback_syn()\n\nafiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.\nIf the allocation fails, nsk is NULL.\n\nThe connection-refused path is entered when the listen state check\nfails, the accept backlog is full, or nsk is NULL. The code\nunconditionally calls iucv_sock_kill(nsk) in that path.\n\niucv_sock_kill() does not accept a NULL socket pointer and immediately\ndereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,\ncalling iucv_sock_kill(nsk) results in a NULL pointer dereference.\n\nOnly call iucv_sock_kill() when a child socket was successfully\nallocated.",
  "id": "CVE-2026-68141",
  "modified": "2026-08-14T03:51:53.211273750Z",
  "published": "2026-08-10T11:59:05.051Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68141.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68141"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()"
}