CVE-2026-72465
Description
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Sanitize the reply credit grant after parsing The out_norqst exit in rpcrdma_reply_handler() branches away before the credit clamp, so a reply that matches no pending request reaches out_post carrying the raw credit value parsed from the wire. rpcrdma_post_recvs() does not bound its @needed argument: the refill loop allocates and chains Receive WRs until the count is satisfied or allocation fails. A peer that sends a well-formed reply carrying an unknown XID and an inflated credit grant therefore drives rep allocation and Receive posting past re_max_requests on every such reply. Move the clamp to immediately after the credit field is parsed, ahead of the first branch that can reach out_post, so every later consumer sees a sanitized value. The cwnd update stays on the matched-request path.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/33db78b1b24fc6a464ae08aa4d2538c5f883eb5e
- https://git.kernel.org/stable/c/41634242140173eabbf54f899f9c70b5c685e786
- https://git.kernel.org/stable/c/469b22376ee73369711ecf2761bd122ef4195963
- https://git.kernel.org/stable/c/7cf332b3d82d73ffceedca6b4a120be074172021
- https://git.kernel.org/stable/c/8be1bb378def94a5cb8f7527a191e476407118ec
- https://git.kernel.org/stable/c/c3a628aab2dc8f5fd7bff86ceaeae64de590e60a
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.