CVE-2024-54456

Local kernel-memory corruption via unbounded RPC name

Published Feb 27, 2025 · Updated Aug 5, 2026

Buffer overflow in Linux NFS sysfs code in versions 6.5 through 6.13.3 allows local users to corrupt kernel memory through an RPC client link. nfs_sysfs_link_rpc_client() appends clnt->cl_program->name to a fixed 64-byte name buffer with strcat() without bounding the source length. Low-privilege local access is required, and successful triggering can expose or alter data and interrupt the host.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Linux NFS sysfs code in versions 6.5 through 6.13.3 allows local users to corrupt kernel memory through an RPC client link. nfs_sysfs_link_rpc_client() appends clnt->cl_program->name to a fixed 64-byte name buffer with strcat() without bounding the source length. Low-privilege local access is required, and successful triggering can expose or alter data and interrupt the host.

The record

CVE
CVE-2024-54456
Published
Feb 27, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 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

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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=6.5
  2. Affected versionversion=e13b549319a684dd80c4cc25e9567a5c84007e32 <19b3ca651b4b473878c73539febe477905041442
  3. Affected versionversion=e13b549319a684dd80c4cc25e9567a5c84007e32 <49fd4e34751e90e6df009b70cd0659dc839e7ca8
  4. Affected versionversion=e13b549319a684dd80c4cc25e9567a5c84007e32 <dd8830779b77f4d1206d28d02ad56a03fc0e78f7
  5. Affected versionversion=e13b549319a684dd80c4cc25e9567a5c84007e32 <e8e0eb5601d4a6c74c336e3710afe3a0348c469d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=e13b549319a684dd80c4cc25e9567a5c84007e32 <19b3ca651b4b473878c73539febe477905041442; version=e13b549319a684dd80c4cc25e9567a5c84007e32 <49fd4e34751e90e6df009b70cd0659dc839e7ca8; version=e13b549319a684dd80c4cc25e9567a5c84007e32 <dd8830779b77f4d1206d28d02ad56a03fc0e78f7; version=e13b549319a684dd80c4cc25e9567a5c84007e32 <e8e0eb5601d4a6c74c336e3710afe3a0348c469d

Published CVSS scores

7.8Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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