{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "872d26a391da92ed8f0c0f5cb5fef428067b7f30"
            },
            {
              "fixed": "8d01f0d0e96485e39ad89b859ef85e1dc3020465"
            },
            {
              "fixed": "7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e"
            },
            {
              "fixed": "e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741"
            },
            {
              "fixed": "86cc450022473c4a29b43a09f3ec22a9ef566dac"
            },
            {
              "fixed": "c509f20be1cabda3087810bb2d658d66b3f31f35"
            },
            {
              "fixed": "9c95f7e66c62ee6c6abedcf1c04311f430ff5833"
            },
            {
              "fixed": "7fd6da0f28932442b51658bac4ff55565ca9b377"
            },
            {
              "fixed": "9b770e40bc00381e5ebf53653de5776773415be3"
            },
            {
              "fixed": "737a3b535247226f6e1a7988fd9d6e63e7d6fc71"
            }
          ],
          "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": "5.10.267"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.218"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.185"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.154"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.106"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.47"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80788.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations\n\nWhen fuzzing the nvme target code, I tripped a kernel warning in\nnvmet_tcp_map_data() because the length passed into the allocator is\ncontrolled by the remote initiator.\n\nA remote initiator that sends a command with an SGL claiming a huge\nnumber, can create a scatterlist and iovec allocation of over 1 million\nentries, which causes the backing kmalloc call to exceed MAX_PAGE_ORDER\nand then the page allocator will trip on a WARN_ON_ONCE_GFP() message:\n\n  WARNING: mm/page_alloc.c:5280 __alloc_frozen_pages_noprof\n  Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n  ...\n  sgl_alloc_order\n  nvmet_tcp_map_data\n  nvmet_tcp_try_recv_pdu\n\nAs it's never good to trip a kernel warning remotely due to many systems\nhaving panic-on-warn enabled, let's silence it by just add GFP_NOWARN to\nthe allocation flags.",
  "id": "CVE-2026-80788",
  "modified": "2026-09-08T03:30:22.137649221Z",
  "published": "2026-09-04T15:12:59.912Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80788.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80788"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations"
}