CVE-2026-72465
Last modified
CVE-2026-72465 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d01d6670c169316115b26dfb3585a73dfe40b563, < 7cf332b3d82d73ffceedca6b4a120be074172021; >= d1b159356a3584943192712392fcb2439aafb8c1, < 41634242140173eabbf54f899f9c70b5c685e786; >= 17da9e0caa8615f6fc3b4022eadbd78a9aea1a2a, < 8be1bb378def94a5cb8f7527a191e476407118ec; >= e7ae0883c8c89b901226de43862184bf37054338, < 469b22376ee73369711ecf2761bd122ef4195963; >= 704f3f640f72db4d44ec5ce3db8d4e150c974bc7, < 33db78b1b24fc6a464ae08aa4d2538c5f883eb5e; >= 704f3f640f72db4d44ec5ce3db8d4e150c974bc7, < c3a628aab2dc8f5fd7bff86ceaeae64de590e60a |
| Linux | Linux | 7.1 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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