{"id":"CVE-2026-72467","summary":"xprtrdma: Check frwr_wp_create() during connect","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: Check frwr_wp_create() during connect\n\nfrwr_wp_create() creates the singleton Memory Region used to encode\npadding for Write chunks whose payload length is not XDR-aligned. Its\nfailure paths return a negative errno and leave ep-\u003ere_write_pad_mr set\nto NULL.\n\nrpcrdma_xprt_connect() currently ignores that return value. If\nfrwr_wp_create() fails after the rest of the connection setup succeeds,\nxprt_rdma_connect_worker() treats the connection attempt as successful\nand sets XPRT_CONNECTED. A later NFS/RDMA read with a non-4-byte-aligned\nreceive page length reaches rpcrdma_encode_write_list(), passes the NULL\nwrite-pad MR to encode_rdma_segment(), and dereferences it.\n\nThis is locally triggerable on an NFS/RDMA client after a connect or\nreconnect hits a local MR allocation, DMA-map, MR-map, or post-send\nfailure; a remote peer alone cannot force the local MR setup failure.\n\nCheck the return value and fail the connect as -ENOTCONN, matching the\nadjacent setup failures. This keeps XPRT_CONNECTED clear and lets the\nnormal reconnect path retry.","modified":"2026-08-18T03:31:25.720953279Z","published":"2026-08-15T05:57:10.499Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72467.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0f13fc7c7d2e0427517e63c739277a4cd338b0c5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b252fe1778b2cdd68283146455929801bc2abd7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b7be4f3feae322f1c2c40a3bdc99db93574a49e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7471e66373a4444a57ef2192f8c4081202c54f45"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd798b76a3481e392820c3ae86ed4592858c6b0f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef3b79edf14b6bfb0d21a26ccb0463f9cf82c6a9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72467.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72467"},{"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":"21037b8c2258ec40de3b31be9ced43ceb3b784f7"},{"fixed":"3b252fe1778b2cdd68283146455929801bc2abd7"},{"fixed":"dd798b76a3481e392820c3ae86ed4592858c6b0f"},{"fixed":"6b7be4f3feae322f1c2c40a3bdc99db93574a49e"},{"fixed":"7471e66373a4444a57ef2192f8c4081202c54f45"},{"fixed":"ef3b79edf14b6bfb0d21a26ccb0463f9cf82c6a9"},{"fixed":"0f13fc7c7d2e0427517e63c739277a4cd338b0c5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72467.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"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-2026-72467.json"}}],"schema_version":"1.9.0"}