CVE-2026-80834Hinoki check available

Freed-memory access via interrupted DMA generation

Published Sep 4, 2026 · Updated Sep 4, 2026

Use-after-free in Linux 5.10 through 7.2.2 allows attackers to access freed memory during sun8i-ce PRNG generation. The sun8i-ce crypto_rng generate() path waits interruptibly for DMA completion but does not stop the DMA operation when a signal ends the wait. Reachability requires sun8i-ce PRNG support on compatible hardware and a signal during an in-flight request; the source does not establish code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in Linux 5.10 through 7.2.2 allows attackers to access freed memory during sun8i-ce PRNG generation. The sun8i-ce crypto_rng generate() path waits interruptibly for DMA completion but does not stop the DMA operation when a signal ends the wait. Reachability requires sun8i-ce PRNG support on compatible hardware and a signal during an in-flight request; the source does not establish code execution.

The record

CVE
CVE-2026-80834
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=5.10
  2. Affected versionversion=5eb7e946888493959b1c393144934afcbcd0cfc1 <011556f71d094da61379ae3672692cae2795304e
  3. Affected versionversion=5eb7e946888493959b1c393144934afcbcd0cfc1 <1017f987c5f0841f00408a78f947990c9d84b346

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=5eb7e946888493959b1c393144934afcbcd0cfc1 <011556f71d094da61379ae3672692cae2795304e; version=5eb7e946888493959b1c393144934afcbcd0cfc1 <1017f987c5f0841f00408a78f947990c9d84b346

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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