CVE-2026-68331

Local denial of service via reference leak

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource leak in Linux dpaa2-eth allows local users to exhaust device references through repeated MAC disconnects. The disconnect path frees the dpaa2_mac object without calling put_device() for mac->mc_dev, retaining the reference acquired by fsl_mc_get_endpoint(). Exploitation requires NXP DPAA2 Ethernet hardware and repeated connect-disconnect cycles; accumulated references can exhaust resources and interrupt the system.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux dpaa2-eth allows local users to exhaust device references through repeated MAC disconnects. The disconnect path frees the dpaa2_mac object without calling put_device() for mac->mc_dev, retaining the reference acquired by fsl_mc_get_endpoint(). Exploitation requires NXP DPAA2 Ethernet hardware and repeated connect-disconnect cycles; accumulated references can exhaust resources and interrupt the system.

The record

CVE
CVE-2026-68331
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=5.5
  2. Affected versionversion=71947923089353f23f4f210864903c4dcf2c1696 <915012e923316b8b5d5bf8fc771617b47bd7572d
  3. Affected versionversion=71947923089353f23f4f210864903c4dcf2c1696 <a3cecf169cc652b558d08661bb6ce55e4c933ec0
  4. Affected versionversion=71947923089353f23f4f210864903c4dcf2c1696 <b4b201cc93ff70150853aba03e14d314d1980ca0
  5. Affected versionversion=71947923089353f23f4f210864903c4dcf2c1696 <e23e4a3b9dfd893469c731318d409cdf04fb1ddf
  6. Affected versionversion=71947923089353f23f4f210864903c4dcf2c1696 <f112df0744e2d77baa68eeebb860021bbaaa022a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=71947923089353f23f4f210864903c4dcf2c1696 <915012e923316b8b5d5bf8fc771617b47bd7572d; version=71947923089353f23f4f210864903c4dcf2c1696 <a3cecf169cc652b558d08661bb6ce55e4c933ec0; version=71947923089353f23f4f210864903c4dcf2c1696 <b4b201cc93ff70150853aba03e14d314d1980ca0; version=71947923089353f23f4f210864903c4dcf2c1696 <e23e4a3b9dfd893469c731318d409cdf04fb1ddf; version=71947923089353f23f4f210864903c4dcf2c1696 <f112df0744e2d77baa68eeebb860021bbaaa022a

Published CVSS scores

5.5Red HatCVSS: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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
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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