CVE-2026-68135

Local service interruption via RX buffer leak

Published Aug 10, 2026 · Updated Aug 10, 2026

A resource leak in the Linux hip04 network driver allows local users to exhaust memory and interrupt service on affected kernels. When build_skb() fails in hip04_rx_poll(), the refill path replaces slot references without releasing the current RX buffer or its DMA mapping. Systems require HiSilicon hip04 network hardware and local low-privileged access; exhaustion can deny service without disclosing or altering data.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A resource leak in the Linux hip04 network driver allows local users to exhaust memory and interrupt service on affected kernels. When build_skb() fails in hip04_rx_poll(), the refill path replaces slot references without releasing the current RX buffer or its DMA mapping. Systems require HiSilicon hip04 network hardware and local low-privileged access; exhaustion can deny service without disclosing or altering data.

The record

CVE
CVE-2026-68135
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=4.5
  2. Affected versionversion=701a0fd5231866db08cebcd502894699f49cb960 <14fa65d10f5696b063a7d8d26e8291ea84a2c6ed
  3. Affected versionversion=701a0fd5231866db08cebcd502894699f49cb960 <67a7614bde310da006ab259f4f163d3fb0f9e253
  4. Affected versionversion=701a0fd5231866db08cebcd502894699f49cb960 <80d977f280b4eccd4ac5369871d0ecb2b9c9a49d
  5. Affected versionversion=701a0fd5231866db08cebcd502894699f49cb960 <a0f247d63489a107bbc3b712a77b302af2a2a173
  6. Affected versionversion=701a0fd5231866db08cebcd502894699f49cb960 <e054dcd990d8180cde529ea28ce0838e76a5ad5e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.5; version=701a0fd5231866db08cebcd502894699f49cb960 <14fa65d10f5696b063a7d8d26e8291ea84a2c6ed; version=701a0fd5231866db08cebcd502894699f49cb960 <67a7614bde310da006ab259f4f163d3fb0f9e253; version=701a0fd5231866db08cebcd502894699f49cb960 <80d977f280b4eccd4ac5369871d0ecb2b9c9a49d; version=701a0fd5231866db08cebcd502894699f49cb960 <a0f247d63489a107bbc3b712a77b302af2a2a173; version=701a0fd5231866db08cebcd502894699f49cb960 <e054dcd990d8180cde529ea28ce0838e76a5ad5e

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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