CVE-2026-74299

Service interruption via leaked RDMA memory keys

Published Aug 15, 2026 · Updated Aug 15, 2026

A memory leak in Linux kernel 7.1 through 7.1.4 allows local users to interrupt service by exhausting RDMA memory keys. The age_pinned_pool() error flow moves pinned handles between queues with per-handle GFP_ATOMIC allocations but fails to reclaim an mkey when destination-page allocation fails. Reaching the leak requires local access, RDMA FRMR pinned-handle pool aging, and memory pressure; repeated failures consume memory-key resources and interrupt RDMA service.

CVSS severity2.5
Low
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

A memory leak in Linux kernel 7.1 through 7.1.4 allows local users to interrupt service by exhausting RDMA memory keys. The age_pinned_pool() error flow moves pinned handles between queues with per-handle GFP_ATOMIC allocations but fails to reclaim an mkey when destination-page allocation fails. Reaching the leak requires local access, RDMA FRMR pinned-handle pool aging, and memory pressure; repeated failures consume memory-key resources and interrupt RDMA service.

The record

CVE
CVE-2026-74299
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=020d189d16a62ed56115cce7e255459cf0eeb4e6 <c6936506ed556ce3ccad36ab999baf2764dd7d25
  2. Affected versionversion=020d189d16a62ed56115cce7e255459cf0eeb4e6 <edf133d28fc43f7f8b0da43a8d5b93fdf8073d35
  3. Affected versionversion=7.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=020d189d16a62ed56115cce7e255459cf0eeb4e6 <c6936506ed556ce3ccad36ab999baf2764dd7d25; version=020d189d16a62ed56115cce7e255459cf0eeb4e6 <edf133d28fc43f7f8b0da43a8d5b93fdf8073d35; version=7.1

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo