CVE-2024-27401Public exploit

User-space memory corruption via unchecked packet length

Published May 13, 2024 · Updated Aug 5, 2026

Buffer overflow in the Linux kernel FireWire nosy driver allows local users to overwrite user-space memory through a read request. The packet_buffer_get function copies the head packet length into a caller-supplied buffer without first comparing it with user_length. Reachability requires local access to the nosy read interface and a packet larger than the supplied buffer; the overwrite can corrupt the reading process memory.

CVSS severity7.8
High
EPSS probability0.30%
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 the Linux kernel FireWire nosy driver allows local users to overwrite user-space memory through a read request. The packet_buffer_get function copies the head packet length into a caller-supplied buffer without first comparing it with user_length. Reachability requires local access to the nosy read interface and a packet larger than the supplied buffer; the overwrite can corrupt the reading process memory.

The record

CVE
CVE-2024-27401
Published
May 13, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2024CVE 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=2.6.36
  2. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <1fe60ee709436550f8cfbab01295936b868d5baa
  3. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <38762a0763c10c24a4915feee722d7aa6e73eb98
  4. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <4ee0941da10e8fdcdb34756b877efd3282594c1f
  5. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <539d51ac48bcfcfa1b3d4a85f8df92fa22c1d41c
  6. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <67f34f093c0f7bf33f5b4ae64d3d695a3b978285
  7. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <79f988d3ffc1aa778fc5181bdfab312e57956c6b
  8. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <7b8c7bd2296e95b38a6ff346242356a2e7190239
  9. Affected versionversion=286468210d83ce0ca1e37e346ed9f4457a161650 <cca330c59c54207567a648357835f59df9a286bb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.36; version=286468210d83ce0ca1e37e346ed9f4457a161650 <1fe60ee709436550f8cfbab01295936b868d5baa; version=286468210d83ce0ca1e37e346ed9f4457a161650 <38762a0763c10c24a4915feee722d7aa6e73eb98; version=286468210d83ce0ca1e37e346ed9f4457a161650 <4ee0941da10e8fdcdb34756b877efd3282594c1f; version=286468210d83ce0ca1e37e346ed9f4457a161650 <539d51ac48bcfcfa1b3d4a85f8df92fa22c1d41c; version=286468210d83ce0ca1e37e346ed9f4457a161650 <67f34f093c0f7bf33f5b4ae64d3d695a3b978285; version=286468210d83ce0ca1e37e346ed9f4457a161650 <79f988d3ffc1aa778fc5181bdfab312e57956c6b; version=286468210d83ce0ca1e37e346ed9f4457a161650 <7b8c7bd2296e95b38a6ff346242356a2e7190239; version=286468210d83ce0ca1e37e346ed9f4457a161650 <cca330c59c54207567a648357835f59df9a286bb

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
7.1NVDCVSS: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.

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 exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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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