CVE-2026-53217Network attack vector

Stale packet-tail reads via incorrect DMA offset

Published Jun 25, 2026 · Updated Jun 25, 2026

Improper DMA synchronization in the Linux Kernel mvpp2 driver allows remote attackers to trigger stale packet-tail reads via received frames. The receive path synchronizes from the DMA buffer base instead of MVPP2_SKB_HEADROOM, leaving an equal-length packet-tail region unsynchronized. On non-coherent DMA systems with mvpp2, the CPU consumes residual cache data as frame bytes; public sources do not describe a remote retrieval path.

CVSS severity8.6
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper DMA synchronization in the Linux Kernel mvpp2 driver allows remote attackers to trigger stale packet-tail reads via received frames. The receive path synchronizes from the DMA buffer base instead of MVPP2_SKB_HEADROOM, leaving an equal-length packet-tail region unsynchronized. On non-coherent DMA systems with mvpp2, the CPU consumes residual cache data as frame bytes; public sources do not describe a remote retrieval path.

The record

CVE
CVE-2026-53217
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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=e1921168bbd4810de4197446e52f652cd0dd9541 <180235600934bef6add3be637c296d6cf3272e67
  3. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8
  4. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <23548007b3c66d628fc7d6b80d1e23be04ea10d9
  5. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <60412bdd1b2576659eac23a23d2d9ff96228a643
  6. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <a13199fa224e9f776f4005d5037df03aa9ea8f37
  7. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <a3ad9b5767c89531fc7dae951b51b0933dcf7051
  8. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <bede0f481b9137d73d1cf64309cbe4b94818a5d6
  9. Affected versionversion=e1921168bbd4810de4197446e52f652cd0dd9541 <e302206ad84a407a7e5f3f6fe767ff5efaace689

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.5; version=e1921168bbd4810de4197446e52f652cd0dd9541 <180235600934bef6add3be637c296d6cf3272e67; version=e1921168bbd4810de4197446e52f652cd0dd9541 <19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8; version=e1921168bbd4810de4197446e52f652cd0dd9541 <23548007b3c66d628fc7d6b80d1e23be04ea10d9; version=e1921168bbd4810de4197446e52f652cd0dd9541 <60412bdd1b2576659eac23a23d2d9ff96228a643; version=e1921168bbd4810de4197446e52f652cd0dd9541 <a13199fa224e9f776f4005d5037df03aa9ea8f37; version=e1921168bbd4810de4197446e52f652cd0dd9541 <a3ad9b5767c89531fc7dae951b51b0933dcf7051; version=e1921168bbd4810de4197446e52f652cd0dd9541 <bede0f481b9137d73d1cf64309cbe4b94818a5d6; version=e1921168bbd4810de4197446e52f652cd0dd9541 <e302206ad84a407a7e5f3f6fe767ff5efaace689

Published CVSS scores

8.6kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

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)
Vectornetwork
Privilegesunauthenticated
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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