CVE-2026-53159

DSP address corruption via FastRPC VMA gap underflow

Published Jun 25, 2026 · Updated Jun 25, 2026

DMA address corruption in Linux Kernel FastRPC allows local users to send an invalid buffer address to a Qualcomm DSP through an ioctl. fastrpc_get_args() accepts a user pointer, uses find_vma() without verifying containment, and underflows the page-offset subtraction when the pointer occupies the preceding VMA gap. Low-privilege access to the FastRPC device is required; published material establishes address corruption but not a deterministic crash, privilege gain, or data disclosure.

CVSS severity8.8
High
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

DMA address corruption in Linux Kernel FastRPC allows local users to send an invalid buffer address to a Qualcomm DSP through an ioctl. fastrpc_get_args() accepts a user pointer, uses find_vma() without verifying containment, and underflows the page-offset subtraction when the pointer occupies the preceding VMA gap. Low-privilege access to the FastRPC device is required; published material establishes address corruption but not a deterministic crash, privilege gain, or data disclosure.

The record

CVE
CVE-2026-53159
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

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=5.1.6 <5.2
  2. Affected versionversion=5.2
  3. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <2d0f47e27c1fa718b29c69aa7c96a2c5161bc2c2
  4. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <464c6ad2aa16e1e1df9d559289199356493d1e00
  5. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <53e06f8a3c2b085c31bf1284e2ebcb8036e99625
  6. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <708c17b52c60fe7a57e73b495bdee50f58feb48c
  7. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <7ba7b30ddb04646d4d638f4d8c4718a304bbbddd
  8. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <d3e26df2e8eb361e6bef096b2fd565476a1f14c4
  9. Affected versionversion=80f3afd72bd4149c57daf852905476b43bb47647 <e69e306a4cccb40a73511350cb280825a556ce3c
  10. Affected versionversion=954edc466128479872731d06f026d0e71840d153

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.1.6 <5.2; version=5.2; version=80f3afd72bd4149c57daf852905476b43bb47647 <2d0f47e27c1fa718b29c69aa7c96a2c5161bc2c2; version=80f3afd72bd4149c57daf852905476b43bb47647 <464c6ad2aa16e1e1df9d559289199356493d1e00; version=80f3afd72bd4149c57daf852905476b43bb47647 <53e06f8a3c2b085c31bf1284e2ebcb8036e99625; version=80f3afd72bd4149c57daf852905476b43bb47647 <708c17b52c60fe7a57e73b495bdee50f58feb48c; version=80f3afd72bd4149c57daf852905476b43bb47647 <7ba7b30ddb04646d4d638f4d8c4718a304bbbddd; version=80f3afd72bd4149c57daf852905476b43bb47647 <d3e26df2e8eb361e6bef096b2fd565476a1f14c4; version=80f3afd72bd4149c57daf852905476b43bb47647 <e69e306a4cccb40a73511350cb280825a556ce3c; version=954edc466128479872731d06f026d0e71840d153

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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.

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)
Vectorlocal
Privilegesauthenticated
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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