CVE-2024-27016

Kernel crash via truncated PPPoE header

Published May 1, 2024 · Updated Aug 5, 2026

Out-of-bounds read in Linux kernel 5.13 and later allows attackers to crash the kernel via truncated PPPoE session frames. The netfilter ingress flowtable path reads the PPPoE protocol field before confirming that the packet buffer contains the complete header. The frame must reach a flowtable-bound interface from the same Layer 2 segment; the read can panic or fault the kernel and otherwise yields only a limited two-byte comparison oracle.

CVSS severity7.1
High
EPSS probability0.34%
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 read in Linux kernel 5.13 and later allows attackers to crash the kernel via truncated PPPoE session frames. The netfilter ingress flowtable path reads the PPPoE protocol field before confirming that the packet buffer contains the complete header. The frame must reach a flowtable-bound interface from the same Layer 2 segment; the read can panic or fault the kernel and otherwise yields only a limited two-byte comparison oracle.

The record

CVE
CVE-2024-27016
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 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

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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=5.13
  2. Affected versionversion=72efd585f7144a047f7da63864284764596ccad9 <87b3593bed1868b2d9fe096c01bcdf0ea86cbebf
  3. Affected versionversion=72efd585f7144a047f7da63864284764596ccad9 <8bf7c76a2a207ca2b4cfda0a279192adf27678d7
  4. Affected versionversion=72efd585f7144a047f7da63864284764596ccad9 <a2471d271042ea18e8a6babc132a8716bb2f08b9
  5. Affected versionversion=72efd585f7144a047f7da63864284764596ccad9 <cf366ee3bc1b7d1c76a882640ba3b3f8f1039163
  6. Affected versionversion=72efd585f7144a047f7da63864284764596ccad9 <d06977b9a4109f8738bb276125eb6a0b772bc433

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=72efd585f7144a047f7da63864284764596ccad9 <87b3593bed1868b2d9fe096c01bcdf0ea86cbebf; version=72efd585f7144a047f7da63864284764596ccad9 <8bf7c76a2a207ca2b4cfda0a279192adf27678d7; version=72efd585f7144a047f7da63864284764596ccad9 <a2471d271042ea18e8a6babc132a8716bb2f08b9; version=72efd585f7144a047f7da63864284764596ccad9 <cf366ee3bc1b7d1c76a882640ba3b3f8f1039163; version=72efd585f7144a047f7da63864284764596ccad9 <d06977b9a4109f8738bb276125eb6a0b772bc433

Published CVSS scores

7.1Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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