CVE-2026-72465Network attack vector

Remote service disruption via unclamped reply credits

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource exhaustion in Linux 7.1 allows remote attackers to disrupt systems by sending crafted RPC-over-RDMA replies. rpcrdma_reply_handler() routes unknown-XID replies to receive reposting before clamping parsed credit, while rpcrdma_post_recvs() allocates unbounded Receive WRs. Reachability requires an RPC-over-RDMA peer able to send well-formed replies; repeated inflated grants exhaust kernel resources and destabilize the system.

CVSS severityUnavailable
Unscored
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Linux 7.1 allows remote attackers to disrupt systems by sending crafted RPC-over-RDMA replies. rpcrdma_reply_handler() routes unknown-XID replies to receive reposting before clamping parsed credit, while rpcrdma_post_recvs() allocates unbounded Receive WRs. Reachability requires an RPC-over-RDMA peer able to send well-formed replies; repeated inflated grants exhaust kernel resources and destabilize the system.

The record

CVE
CVE-2026-72465
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-770, T1499.002
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=17da9e0caa8615f6fc3b4022eadbd78a9aea1a2a <8be1bb378def94a5cb8f7527a191e476407118ec
  2. Affected versionversion=704f3f640f72db4d44ec5ce3db8d4e150c974bc7 <33db78b1b24fc6a464ae08aa4d2538c5f883eb5e
  3. Affected versionversion=704f3f640f72db4d44ec5ce3db8d4e150c974bc7 <c3a628aab2dc8f5fd7bff86ceaeae64de590e60a
  4. Affected versionversion=7.1
  5. Affected versionversion=d01d6670c169316115b26dfb3585a73dfe40b563 <7cf332b3d82d73ffceedca6b4a120be074172021
  6. Affected versionversion=d1b159356a3584943192712392fcb2439aafb8c1 <41634242140173eabbf54f899f9c70b5c685e786
  7. Affected versionversion=e7ae0883c8c89b901226de43862184bf37054338 <469b22376ee73369711ecf2761bd122ef4195963

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=17da9e0caa8615f6fc3b4022eadbd78a9aea1a2a <8be1bb378def94a5cb8f7527a191e476407118ec; version=704f3f640f72db4d44ec5ce3db8d4e150c974bc7 <33db78b1b24fc6a464ae08aa4d2538c5f883eb5e; version=704f3f640f72db4d44ec5ce3db8d4e150c974bc7 <c3a628aab2dc8f5fd7bff86ceaeae64de590e60a; version=7.1; version=d01d6670c169316115b26dfb3585a73dfe40b563 <7cf332b3d82d73ffceedca6b4a120be074172021; version=d1b159356a3584943192712392fcb2439aafb8c1 <41634242140173eabbf54f899f9c70b5c685e786; version=e7ae0883c8c89b901226de43862184bf37054338 <469b22376ee73369711ecf2761bd122ef4195963

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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