{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "872d26a391da92ed8f0c0f5cb5fef428067b7f30"
            },
            {
              "fixed": "a43a9abc1ebf663f0aa56a729106f68dd9c77da6"
            },
            {
              "fixed": "ba3209704b3cd46961e4e081af5c52a780785648"
            },
            {
              "fixed": "5fbe83a374f09561a0f0c1f4aa021501ffd681eb"
            },
            {
              "fixed": "4dae393956093c807212918fd91a8fc70df15338"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74386.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: fix page fragment cache leak in error path\n\nIn nvmet_tcp_alloc_queue(), when a connection is closed during the\nallocation process (e.g., nvmet_tcp_set_queue_sock() returns -ENOTCONN),\nthe error handling jumps to out_destroy_sq and then to out_ida_remove\nwithout draining the page fragment cache.\n\nAlthough nvmet_tcp_free_cmd() is called in some error paths to release\nindividual page fragments, the underlying page cache reference held by\nqueue-\u003epf_cache is never released. The first allocation using pf_cache\nis the call to nvmet_tcp_alloc_cmd() for queue-\u003econnect, which happens\nafter ida_alloc() returns successfully. This results in a page leak each\ntime a connection fails during allocation, which could lead to memory\nexhaustion over time if connections are repeatedly opened and closed.\n\nFix this by calling page_frag_cache_drain() before freeing the queue\nstructure in the out_ida_remove label.",
  "id": "CVE-2026-74386",
  "modified": "2026-08-16T03:31:12.980775032Z",
  "published": "2026-08-15T05:59:01.786Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4dae393956093c807212918fd91a8fc70df15338"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fbe83a374f09561a0f0c1f4aa021501ffd681eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a43a9abc1ebf663f0aa56a729106f68dd9c77da6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba3209704b3cd46961e4e081af5c52a780785648"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74386.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74386"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nvmet-tcp: fix page fragment cache leak in error path"
}