nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

{
  "id": "319151c41fc741cf8092e4680b0b8b1fd087e3fae6f08ca2e1f8489a7ea3521a",
  "url": "https://osv.dev/vulnerability/CVE-2023-52454",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec(). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110 Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq().",
    "evidence": "osv:CVE-2023-52454",
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    "severity": "high",
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      "id": "CVE-2023-52454",
      "aliases": [
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      "modified": "2026-10-28T02:30:52.568890476Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88",
        "https://git.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42",
        "https://git.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d",
        "https://git.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68",
        "https://git.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9d",
        "https://git.kernel.org/stable/c/efa56305908ba20de2104f1b8508c6a7401833be",
        "https://git.kernel.org/stable/c/f775f2621c2ac5cc3a0b3a64665dad4fb146e510",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52454.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52454",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 521085,
  "published_at": "2024-02-23T14:46:17.827+00:00"
}