io_uring/rw: free potentially allocated iovec on cache put failure

{
  "id": "c1c14bafeb0b996e2fd3450f1376830227ec7bc6e886af689cb0eb51b1acc82c",
  "url": "https://osv.dev/vulnerability/CVE-2026-23259",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring/rw: free potentially allocated iovec on cache put failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: free potentially allocated iovec on cache put failure If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.",
    "evidence": "osv:CVE-2026-23259",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-23259",
      "aliases": [
        "CVE-2026-23259"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a9165b83c1937eeed1f0c731468216d6371d647f"
                },
                {
                  "fixed": "41cda4c66846c3bfcdeaf28444ccabbb55e64cf1"
                },
                {
                  "fixed": "1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c"
                },
                {
                  "fixed": "4b9748055457ac3a0710bf210c229d01ea1b01b9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23259.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.10.0"
                },
                {
                  "fixed": "6.12.114"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23259.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.800852729Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c",
        "https://git.kernel.org/stable/c/41cda4c66846c3bfcdeaf28444ccabbb55e64cf1",
        "https://git.kernel.org/stable/c/4b9748055457ac3a0710bf210c229d01ea1b01b9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23259.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23259",
        "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/2026/23xxx/CVE-2026-23259.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23259",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 513926,
  "published_at": "2026-03-18T17:41:05.827+00:00"
}