CVE-2024-49568Network attack vector

Server crash via unchecked SMC proposal offsets

Published Jan 11, 2025 · Updated Aug 5, 2026

Out-of-bounds access in the Linux kernel allows remote attackers to crash an SMC server with a crafted version 2 proposal message. The net/smc proposal parser uses client-controlled v2_ext_offset, eid_cnt, and ism_gid_cnt fields without first validating their bounds, so an excessive offset can select an invalid address. The target must accept SMC version 2 proposals; successful exploitation interrupts the host by crashing the kernel.

CVSS severity5.5
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux kernel allows remote attackers to crash an SMC server with a crafted version 2 proposal message. The net/smc proposal parser uses client-controlled v2_ext_offset, eid_cnt, and ism_gid_cnt fields without first validating their bounds, so an excessive offset can select an invalid address. The target must accept SMC version 2 proposals; successful exploitation interrupts the host by crashing the kernel.

The record

CVE
CVE-2024-49568
Published
Jan 11, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.10
  2. Affected versionversion=8c3dca341aea885249e08856c4380300b75d2cf5 <295a92e3df32e72aff0f4bc25c310e349d07ffbf
  3. Affected versionversion=8c3dca341aea885249e08856c4380300b75d2cf5 <42f6beb2d5779429417b5f8115a4e3fa695d2a6c
  4. Affected versionversion=8c3dca341aea885249e08856c4380300b75d2cf5 <7863c9f3d24ba49dbead7e03dfbe40deb5888fdf

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=8c3dca341aea885249e08856c4380300b75d2cf5 <295a92e3df32e72aff0f4bc25c310e349d07ffbf; version=8c3dca341aea885249e08856c4380300b75d2cf5 <42f6beb2d5779429417b5f8115a4e3fa695d2a6c; version=8c3dca341aea885249e08856c4380300b75d2cf5 <7863c9f3d24ba49dbead7e03dfbe40deb5888fdf

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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

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Your stack

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