CVE-2026-72465

In the Linux kernel, the following vulnerability has been resolved:

xprtrdma: Sanitize the reply credit grant after parsing

The outnorqst exit in rpcrdmareplyhandler() branches away before the credit clamp, so a reply that matches no pending request reaches outpost carrying the raw credit value parsed from the wire. rpcrdmapostrecvs() 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 remaxrequests 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.