nvmet-rdma: handle inline data with a nonzero offset

{
  "id": "d05328e1e3883b9f4d2b5b03476252efbcd43c54f86034a362083cf3ea2f8b70",
  "url": "https://osv.dev/vulnerability/CVE-2026-72129",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nvmet-rdma: handle inline data with a nonzero offset",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: handle inline data with a nonzero offset nvmet_rdma_use_inline_sg() maps the host-controlled inline data offset into the per-command inline scatterlist. The bounds check admits any offset with off + len <= inline_data_size, but the mapping still assumes the data begins in the first inline page: sg->offset = off; sg->length = min_t(int, len, PAGE_SIZE - off); When a port is configured with inline_data_size > PAGE_SIZE (settable up to max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size] makes \"PAGE_SIZE - off\" underflow, so sg->length is set to ~4 GiB and the block backend reads far past the first inline page. num_pages(len) also ignores the offset, so an in-bounds offset whose [off, off+len) span crosses a page boundary under-counts the scatterlist. Map the offset properly: split it into a page index and an in-page offset, start the scatterlist at that page, and size the page count from page_off + len. Because the request scatterlist may now start at inline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL identity test in nvmet_rdma_release_rsp() to a range test; otherwise the persistent inline scatterlist is mistaken for an allocated one and nvmet_req_free_sgls() frees an inline page (and warns in free_large_kmalloc()).",
    "evidence": "osv:CVE-2026-72129",
    "products": [
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    "severity": "critical",
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      "metrics": [
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          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:49.889964273Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/11401371152b228448a41d79c6de1c938f93049a",
        "https://git.kernel.org/stable/c/2944113ad5fbcdf5d349d857c03d2a44b6de75b8",
        "https://git.kernel.org/stable/c/42a8ea3acd883f4f210d9e54e0975b1e2292b529",
        "https://git.kernel.org/stable/c/48c0162f647bb47e6084ffbc71b8f213f5e2f4f8",
        "https://git.kernel.org/stable/c/7c96581169c9d9a7d0726e554313acfbead6141c",
        "https://git.kernel.org/stable/c/98bcdfa619150b2f41fa15bac140dbaf2584ad05",
        "https://git.kernel.org/stable/c/bf8bcc1c137d54a62a428b00051fdbb13660673b",
        "https://git.kernel.org/stable/c/c2106ba1b14d644a5203bea1a50dbe25dcad713c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72129.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72129",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72129.json"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 518531,
  "published_at": "2026-08-15T05:53:05.874+00:00"
}