CVE-2024-50094Network attack vector

Remote host crash via unconditional XDP flush

Published Nov 5, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel 6.11 through 6.11.3 allows remote attackers to crash hosts through sfc netconsole traffic. The sfc NAPI poll path passes a zero netpoll budget to an unconditional xdp_do_flush() call, which dereferences an uninitialized bpf_net_context and raises a kernel oops. When netconsole is active on an sfc interface, attacker-generated traffic can induce kernel log transmission and TX-queue contention, repeatedly interrupting the host.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel 6.11 through 6.11.3 allows remote attackers to crash hosts through sfc netconsole traffic. The sfc NAPI poll path passes a zero netpoll budget to an unconditional xdp_do_flush() call, which dereferences an uninitialized bpf_net_context and raises a kernel oops. When netconsole is active on an sfc interface, attacker-generated traffic can induce kernel log transmission and TX-queue contention, repeatedly interrupting the host.

The record

CVE
CVE-2024-50094
Published
Nov 5, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 5, 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=401cb7dae8130fd34eb84648e02ab4c506df7d5e <55e802468e1d38dec8e25a2fdb6078d45b647e8c
  2. Affected versionversion=401cb7dae8130fd34eb84648e02ab4c506df7d5e <65d4fc76d75c136744e67754d20feda609e7b793
  3. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=401cb7dae8130fd34eb84648e02ab4c506df7d5e <55e802468e1d38dec8e25a2fdb6078d45b647e8c; version=401cb7dae8130fd34eb84648e02ab4c506df7d5e <65d4fc76d75c136744e67754d20feda609e7b793; version=6.11

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS: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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