CVE-2026-89995

Kernel memory corruption via DMA pointer mismatch

Published Sep 16, 2026 · Updated Sep 16, 2026

Memory corruption in Linux 5.10 and affected later revisions allows attackers to trigger invalid page handling during DMA allocation. dma_direct_alloc_from_pool returns a CPU virtual address to dma_direct_alloc_pages, which treats that address as a struct page pointer. Reachability requires force_dma_unencrypted(), a nonblocking coherent-pool allocation, and a dma_direct_alloc_pages caller; public sources establish no reliable crash or privilege-escalation outcome.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Linux 5.10 and affected later revisions allows attackers to trigger invalid page handling during DMA allocation. dma_direct_alloc_from_pool returns a CPU virtual address to dma_direct_alloc_pages, which treats that address as a struct page pointer. Reachability requires force_dma_unencrypted(), a nonblocking coherent-pool allocation, and a dma_direct_alloc_pages caller; public sources establish no reliable crash or privilege-escalation outcome.

The record

CVE
CVE-2026-89995
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8
  3. Affected versionversion=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <94a04ad732c9f8b9554270fc4038a06737de5c22
  4. Affected versionversion=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <c3fdb94da43ff23287f85664174c45c45e881a3f
  5. Affected versionversion=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <feeb2ef775081a6c188cdd10e7a45369a07ce531

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=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8; version=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <94a04ad732c9f8b9554270fc4038a06737de5c22; version=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <c3fdb94da43ff23287f85664174c45c45e881a3f; version=5b138c534fda57c2ebc1e6de72578aa1d70788a6 <feeb2ef775081a6c188cdd10e7a45369a07ce531

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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