CVE-2024-27024Public exploit

Kernel warning via mistimed RDS connection trigger

Published May 1, 2024 · Updated May 23, 2026

Improper input validation in Linux RDS RDMA mapping allows local users to trigger a kernel warning through a crafted sendmsg call. __rds_rdma_map returns ENODEV when memory-region setup precedes connection establishment, but rds_sendmsg checks for EAGAIN before connecting. Reachability requires local code to use the RDS RDMA send path; public reproduction shows the warning and failed mapping, not a confirmed crash or data compromise.

CVSS severity7.8
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Linux RDS RDMA mapping allows local users to trigger a kernel warning through a crafted sendmsg call. __rds_rdma_map returns ENODEV when memory-region setup precedes connection establishment, but rds_sendmsg checks for EAGAIN before connecting. Reachability requires local code to use the RDS RDMA send path; public reproduction shows the warning and failed mapping, not a confirmed crash or data compromise.

The record

CVE
CVE-2024-27024
Published
May 1, 2024
Updated
May 23, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-20
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=3.18.85 <3.19; version=4.11; version=4.1.48 <4.2; version=4.4.103 <4.5; version=4.9.66 <4.10; version=57d2ce1603101ce3f30d0ccdc35b98af08d2ed88; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <2b505d05280739ce31d5708da840f42df827cb85; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <786854141057751bc08eb26f1b02e97c1631c8f4; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <907761307469adecb02461a14120e9a1812a5fb1; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <997efea2bf3a4adb96c306b9ad6a91442237bf5b; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <998fd719e6d6468b930ac0c44552ea9ff8b07b80; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <9dfc15a10dfd44f8ff7f27488651cb5be6af83c2; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <b562ebe21ed9adcf42242797dd6cb75beef12bf0; version=584a8279a44a800dea5a5c1e9d53a002e03016b4 <c055fc00c07be1f0df7375ab0036cebd1106ed38; version=5ba1957f889f575f2a240eafe543c3fda5aa72e0; version=783941bd9f445a37c2854ec0b4cb9f9e603193a7; version=952835ccd917682ebb705f89ff1e56fbf068a1d8

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

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Technologies

Your stack

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Your stack

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