{"id":"CVE-2026-72129","title":"nvmet-rdma: handle inline data with a nonzero offset","summary":"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.  T…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < c2106ba1b14d644a5203bea1a50dbe25dcad713c","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < bf8bcc1c137d54a62a428b00051fdbb13660673b","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 11401371152b228448a41d79c6de1c938f93049a","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 7c96581169c9d9a7d0726e554313acfbead6141c","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 42a8ea3acd883f4f210d9e54e0975b1e2292b529","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 2944113ad5fbcdf5d349d857c03d2a44b6de75b8","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 98bcdfa619150b2f41fa15bac140dbaf2584ad05","Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 48c0162f647bb47e6084ffbc71b8f213f5e2f4f8","Linux 4.19"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T18:42:24.250750Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:44:58.318Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72129","references":[{"url":"https://git.kernel.org/stable/c/c2106ba1b14d644a5203bea1a50dbe25dcad713c"},{"url":"https://git.kernel.org/stable/c/bf8bcc1c137d54a62a428b00051fdbb13660673b"},{"url":"https://git.kernel.org/stable/c/11401371152b228448a41d79c6de1c938f93049a"},{"url":"https://git.kernel.org/stable/c/7c96581169c9d9a7d0726e554313acfbead6141c"},{"url":"https://git.kernel.org/stable/c/42a8ea3acd883f4f210d9e54e0975b1e2292b529"},{"url":"https://git.kernel.org/stable/c/2944113ad5fbcdf5d349d857c03d2a44b6de75b8"},{"url":"https://git.kernel.org/stable/c/98bcdfa619150b2f41fa15bac140dbaf2584ad05"},{"url":"https://git.kernel.org/stable/c/48c0162f647bb47e6084ffbc71b8f213f5e2f4f8"}],"tags":["cve.org"],"epss":0.00714,"epssPercentile":0.52733,"ingestedAt":"2026-10-16T19:46:24.428Z","slug":"CVE-2026-72129","body":"## Overview\n\nIn 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()).\n\n## Affected\n\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < c2106ba1b14d644a5203bea1a50dbe25dcad713c`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < bf8bcc1c137d54a62a428b00051fdbb13660673b`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 11401371152b228448a41d79c6de1c938f93049a`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 7c96581169c9d9a7d0726e554313acfbead6141c`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 42a8ea3acd883f4f210d9e54e0975b1e2292b529`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 2944113ad5fbcdf5d349d857c03d2a44b6de75b8`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 98bcdfa619150b2f41fa15bac140dbaf2584ad05`\n- `Linux >= 0d5ee2b2ab4f6776c361bc975c2323bc8b5cf349 < 48c0162f647bb47e6084ffbc71b8f213f5e2f4f8`\n- `Linux 4.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}