CVE-2026-80902

Kernel memory leak via unreclaimed DMA descriptors

Published Sep 4, 2026 · Updated Sep 4, 2026

Resource leak in the sun6i DMA driver in affected Linux kernel releases from 3.17 allows attackers to leak memory during DMA termination. The termination path reclaimed only cyclic descriptors, permanently leaking non-cyclic descriptors and their LLI chains instead of queuing them for cleanup. Reachability requires the sun6i-dma driver and termination of non-cyclic DMA transfers; published material identifies no attacker-controlled trigger or resulting crash.

CVSS severityUnavailable
Unscored
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 the sun6i DMA driver in affected Linux kernel releases from 3.17 allows attackers to leak memory during DMA termination. The termination path reclaimed only cyclic descriptors, permanently leaking non-cyclic descriptors and their LLI chains instead of queuing them for cleanup. Reachability requires the sun6i-dma driver and termination of non-cyclic DMA transfers; published material identifies no attacker-controlled trigger or resulting crash.

The record

CVE
CVE-2026-80902
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=3.17
  2. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <004a7a02982bed0a727a4ac7be400f00f353e7a2
  3. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <1ccc5c059d067c5358682ad5352e7d7e9239ed9b
  4. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <27806fe7b9701af0963dcd510e30e7d0cc314c43
  5. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <9086b488f2737d5dcee86852b83f2059f1cdfabf
  6. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <ab1150115e68a46b687eb38c1ab92782018c9f2c
  7. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <b150f603083cc8b72b0cbf13ec3e91f85b4390a0
  8. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <bb87440561eb72b47a2b848b5373b86433b247e6
  9. Affected versionversion=555859308723d8d5b828304f5eb9281143fd86b5 <d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=3.17; version=555859308723d8d5b828304f5eb9281143fd86b5 <004a7a02982bed0a727a4ac7be400f00f353e7a2; version=555859308723d8d5b828304f5eb9281143fd86b5 <1ccc5c059d067c5358682ad5352e7d7e9239ed9b; version=555859308723d8d5b828304f5eb9281143fd86b5 <27806fe7b9701af0963dcd510e30e7d0cc314c43; version=555859308723d8d5b828304f5eb9281143fd86b5 <9086b488f2737d5dcee86852b83f2059f1cdfabf; version=555859308723d8d5b828304f5eb9281143fd86b5 <ab1150115e68a46b687eb38c1ab92782018c9f2c; version=555859308723d8d5b828304f5eb9281143fd86b5 <b150f603083cc8b72b0cbf13ec3e91f85b4390a0; version=555859308723d8d5b828304f5eb9281143fd86b5 <bb87440561eb72b47a2b848b5373b86433b247e6; version=555859308723d8d5b828304f5eb9281143fd86b5 <d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb

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

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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