{"id":"CVE-2026-72129","aliases":[],"url":"https://o3.security/vulnerability/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 <= inline_data_size, but the mapping still assumes\nthe data begins in the first inline page:\n\n\tsg->offset = off;\n\tsg->length = min_t(int, len, PAGE_SIZE - off);\n\nWhen a port is configured with inline_data_size > 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->length 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()).","published":"2026-08-15T05:53:05.874Z","modified":"2026-08-16T03:48:32.307082254Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.261"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-16T03:48:32.307082254Z"}}