{"id":"CVE-2026-72129","summary":"nvmet-rdma: handle inline data with a nonzero offset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-rdma: handle inline data with a nonzero offset\n\nnvmet_rdma_use_inline_sg() maps the host-controlled inline data offset\ninto the per-command inline scatterlist.  The bounds check admits any\noffset with off + len \u003c= inline_data_size, but the mapping still assumes\nthe data begins in the first inline page:\n\n\tsg-\u003eoffset = off;\n\tsg-\u003elength = min_t(int, len, PAGE_SIZE - off);\n\nWhen a port is configured with inline_data_size \u003e PAGE_SIZE (settable up\nto max(SZ_16K, PAGE_SIZE)), an offset in (PAGE_SIZE, inline_data_size]\nmakes \"PAGE_SIZE - off\" underflow, so sg-\u003elength is set to ~4 GiB and\nthe block backend reads far past the first inline page.  num_pages(len)\nalso ignores the offset, so an in-bounds offset whose [off, off+len)\nspan crosses a page boundary under-counts the scatterlist.\n\nMap the offset properly: split it into a page index and an in-page\noffset, start the scatterlist at that page, and size the page count from\npage_off + len.  Because the request scatterlist may now start at\ninline_sg[page_idx] rather than inline_sg[0], generalize the inline-SGL\nidentity test in nvmet_rdma_release_rsp() to a range test; otherwise the\npersistent inline scatterlist is mistaken for an allocated one and\nnvmet_req_free_sgls() frees an inline page (and warns in\nfree_large_kmalloc()).","modified":"2026-08-18T03:56:20.636484598Z","published":"2026-08-15T05:53:05.874Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72129.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/11401371152b228448a41d79c6de1c938f93049a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2944113ad5fbcdf5d349d857c03d2a44b6de75b8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/42a8ea3acd883f4f210d9e54e0975b1e2292b529"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48c0162f647bb47e6084ffbc71b8f213f5e2f4f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c96581169c9d9a7d0726e554313acfbead6141c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/98bcdfa619150b2f41fa15bac140dbaf2584ad05"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf8bcc1c137d54a62a428b00051fdbb13660673b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c2106ba1b14d644a5203bea1a50dbe25dcad713c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72129.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72129"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349"},{"fixed":"c2106ba1b14d644a5203bea1a50dbe25dcad713c"},{"fixed":"bf8bcc1c137d54a62a428b00051fdbb13660673b"},{"fixed":"11401371152b228448a41d79c6de1c938f93049a"},{"fixed":"7c96581169c9d9a7d0726e554313acfbead6141c"},{"fixed":"42a8ea3acd883f4f210d9e54e0975b1e2292b529"},{"fixed":"2944113ad5fbcdf5d349d857c03d2a44b6de75b8"},{"fixed":"98bcdfa619150b2f41fa15bac140dbaf2584ad05"},{"fixed":"48c0162f647bb47e6084ffbc71b8f213f5e2f4f8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72129.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.19.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72129.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}