{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d977506f8863807129d7a11f4057dfb1b38085ea"
            },
            {
              "fixed": "3e8aed5edaeeb237f97255d711aac6b5843fc059"
            },
            {
              "fixed": "fa9b6accd1ad7af6914b409c6b003c417724c299"
            },
            {
              "fixed": "a192b8cfa447e1b3701a13434a31c392b2e7ed29"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "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-2026-74383.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools\n\nnvme_setup_descriptor_pools() indexes dev-\u003edescriptor_pools[] using the\nnuma_node forwarded from hctx-\u003enuma_node by its single caller,\nnvme_init_hctx_common().  On a non-NUMA kernel hctx-\u003enuma_node is\nNUMA_NO_NODE (-1).  Because the parameter was declared 'unsigned', the\nvalue becomes UINT_MAX and the index walks off the array (sized to\nnr_node_ids), faulting during nvme_alloc_ns() and leaving the namespace\nwithout a /dev node.\n\nReproduces on any NVMe controller probed by a CONFIG_NUMA=n kernel:\n\n  BUG: unable to handle page fault for address: ffff889101603d38\n  RIP: 0010:nvme_init_hctx_common+0x5a/0x190 [nvme]\n  Call Trace:\n   nvme_init_hctx+0x10/0x20 [nvme]\n   nvme_alloc_ns+0x9e/0xa10 [nvme_core]\n   nvme_scan_ns+0x301/0x3b0 [nvme_core]\n   nvme_scan_ns_async+0x23/0x30 [nvme_core]\n\nSwitch the parameter to int and fall back to node 0 when it is\nNUMA_NO_NODE; node 0 is always present.",
  "id": "CVE-2026-74383",
  "modified": "2026-08-18T03:30:56.186009131Z",
  "published": "2026-08-15T05:58:59.767Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e8aed5edaeeb237f97255d711aac6b5843fc059"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a192b8cfa447e1b3701a13434a31c392b2e7ed29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa9b6accd1ad7af6914b409c6b003c417724c299"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74383.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74383"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools"
}