{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80788",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-80788"
  ],
  "published": "2026-09-04T15:14:07Z",
  "summary": "nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations",
  "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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.185",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80788"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-07T14:28:07Z"
  }
}