io_uring/zcrx: fix post open error handling

{
  "id": "309320c50d8c3209090f9b5adc03a4c41c30b284e5d78fadcfdc58d933eec4a3",
  "url": "https://osv.dev/vulnerability/CVE-2026-43174",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring/zcrx: fix post open error handling",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix post open error handling Closing a queue doesn't guarantee that all associated page pools are terminated right away, let the refcounting do the work instead of releasing the zcrx ctx directly.",
    "evidence": "osv:CVE-2026-43174",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-43174",
      "aliases": [
        "CVE-2026-43174"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e0793de24a9f610bd8ce106f7033b3966e7fca0e"
                },
                {
                  "fixed": "18afaff077b46655a8eb6fd7f6de1b81327be577"
                },
                {
                  "fixed": "5d540e4508950c674d6feef1d95463d039bbf4f5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43174.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.19.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43174.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.407980549Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/18afaff077b46655a8eb6fd7f6de1b81327be577",
        "https://git.kernel.org/stable/c/5d540e4508950c674d6feef1d95463d039bbf4f5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43174.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43174",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43174.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43174",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 514525,
  "published_at": "2026-05-06T11:27:48.785+00:00"
}