xprtrdma: Check frwr_wp_create() during connect
Summary
| CVE | CVE-2026-72467 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 06:22:20 UTC |
| Updated | 2026-08-15 06:22:20 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Check frwr_wp_create() during connect frwr_wp_create() creates the singleton Memory Region used to encode padding for Write chunks whose payload length is not XDR-aligned. Its failure paths return a negative errno and leave ep->re_write_pad_mr set to NULL. rpcrdma_xprt_connect() currently ignores that return value. If frwr_wp_create() fails after the rest of the connection setup succeeds, xprt_rdma_connect_worker() treats the connection attempt as successful and sets XPRT_CONNECTED. A later NFS/RDMA read with a non-4-byte-aligned receive page length reaches rpcrdma_encode_write_list(), passes the NULL write-pad MR to encode_rdma_segment(), and dereferences it. This is locally triggerable on an NFS/RDMA client after a connect or reconnect hits a local MR allocation, DMA-map, MR-map, or post-send failure; a remote peer alone cannot force the local MR setup failure. Check the return value and fail the connect as -ENOTCONN, matching the adjacent setup failures. This keeps XPRT_CONNECTED clear and lets the normal reconnect path retry. |
Risk And Classification
EPSS: 0.002150000 probability, percentile 0.121280000 (date 2026-08-15)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 3b252fe1778b2cdd68283146455929801bc2abd7 git | Not specified |
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 dd798b76a3481e392820c3ae86ed4592858c6b0f git | Not specified |
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 6b7be4f3feae322f1c2c40a3bdc99db93574a49e git | Not specified |
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 7471e66373a4444a57ef2192f8c4081202c54f45 git | Not specified |
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 ef3b79edf14b6bfb0d21a26ccb0463f9cf82c6a9 git | Not specified |
| CNA | Linux | Linux | affected 21037b8c2258ec40de3b31be9ced43ceb3b784f7 0f13fc7c7d2e0427517e63c739277a4cd338b0c5 git | Not specified |
| CNA | Linux | Linux | affected 5.16 | Not specified |
| CNA | Linux | Linux | unaffected 5.16 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/7471e66373a4444a57ef2192f8c4081202c54f45 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6b7be4f3feae322f1c2c40a3bdc99db93574a49e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ef3b79edf14b6bfb0d21a26ccb0463f9cf82c6a9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3b252fe1778b2cdd68283146455929801bc2abd7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/dd798b76a3481e392820c3ae86ed4592858c6b0f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0f13fc7c7d2e0427517e63c739277a4cd338b0c5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.