CVE-2024-26834Network attack vector

Service interruption via leaked route destination references

Published Apr 17, 2024 · Updated Aug 5, 2026

Memory leak in Linux kernel nftables flow offload allows remote attackers to interrupt service via forwarded network traffic. The direct-transmit path leaves the destination reference returned by nft_flow_route unreleased before dev_queue_xmit sends the packet, accumulating routing objects. Affected releases are 6.5 through 6.6.18, 6.7 through 6.7.6, and 6.8-rc1 through 6.8-rc5; reachability requires a configured nftables flowtable.

CVSS severity7.5
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Linux kernel nftables flow offload allows remote attackers to interrupt service via forwarded network traffic. The direct-transmit path leaves the destination reference returned by nft_flow_route unreleased before dev_queue_xmit sends the packet, accumulating routing objects. Affected releases are 6.5 through 6.6.18, 6.7 through 6.7.6, and 6.8-rc1 through 6.8-rc5; reachability requires a configured nftables flowtable.

The record

CVE
CVE-2024-26834
Published
Apr 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 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=6.5
  2. Affected versionversion=7c71b831220edeab7ce603d818dc1708d9ea4137 <13b57b5cd591d5b22f9bbf047b2922967de411f3
  3. Affected versionversion=9c5662e95a8dcc232c3ef4deb21033badcd260f6 <a6cafdb49a7bbf4a88367db209703eee6941e023
  4. Affected versionversion=fa502c86566680ac62bc28ec883a069bf7a2aa5e <2d17cf10179a7de6d8f0128168b84ad0b4a1863f
  5. Affected versionversion=fa502c86566680ac62bc28ec883a069bf7a2aa5e <8762785f459be1cfe6fcf7285c123aad6a3703f0
  6. Affected versionversion=fa502c86566680ac62bc28ec883a069bf7a2aa5e <9256ab9232e35a16af9c30fa4e522e6d1bd3605a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=7c71b831220edeab7ce603d818dc1708d9ea4137 <13b57b5cd591d5b22f9bbf047b2922967de411f3; version=9c5662e95a8dcc232c3ef4deb21033badcd260f6 <a6cafdb49a7bbf4a88367db209703eee6941e023; version=fa502c86566680ac62bc28ec883a069bf7a2aa5e <2d17cf10179a7de6d8f0128168b84ad0b4a1863f; version=fa502c86566680ac62bc28ec883a069bf7a2aa5e <8762785f459be1cfe6fcf7285c123aad6a3703f0; version=fa502c86566680ac62bc28ec883a069bf7a2aa5e <9256ab9232e35a16af9c30fa4e522e6d1bd3605a

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5LinuxCVSS:3.1/AV:N/AC:L/PR:N/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

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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