CVE-2025-21437

Memory corruption via concurrent map and unmap IOCTLs

Published Apr 7, 2025 · Updated Feb 26, 2026

A use-after-free in Qualcomm Snapdragon Auto allows local users to corrupt memory by racing memory-map and memory-unmap IOCTL operations. The Automotive Linux OS IOCTL path permits map and unmap operations to execute concurrently, leaving one operation to access memory released by the other. Low-privileged local access is required; Qualcomm reports confidentiality, integrity, and availability impact but does not disclose the exact post-corruption primitive.

CVSS severity7.8
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A use-after-free in Qualcomm Snapdragon Auto allows local users to corrupt memory by racing memory-map and memory-unmap IOCTL operations. The Automotive Linux OS IOCTL path permits map and unmap operations to execute concurrently, leaving one operation to access memory released by the other. Low-privileged local access is required; Qualcomm reports confidentiality, integrity, and availability impact but does not disclose the exact post-corruption primitive.

The record

CVE
CVE-2025-21437
Published
Apr 7, 2025
Updated
Feb 26, 2026
Vendor
Qualcomm
Product
Snapdragon
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=QAM8255P
  2. Affected versionversion=QAM8295P
  3. Affected versionversion=QAM8620P
  4. Affected versionversion=QAM8650P
  5. Affected versionversion=QAM8775P
  6. Affected versionversion=QAMSRV1H
  7. Affected versionversion=QAMSRV1M
  8. Affected versionversion=QCA6574
  9. Affected versionversion=QCA6574A
  10. Affected versionversion=QCA6574AU
  11. Affected versionversion=QCA6595
  12. Affected versionversion=QCA6595AU
  13. Affected versionversion=QCA6688AQ
  14. Affected versionversion=QCA6696
  15. Affected versionversion=QCA6698AQ
  16. Affected versionversion=QCA6797AQ
  17. Affected versionversion=SA6155P
  18. Affected versionversion=SA7255P
  19. Affected versionversion=SA7775P
  20. Affected versionversion=SA8155P
  21. Affected versionversion=SA8195P
  22. Affected versionversion=SA8255P
  23. Affected versionversion=SA8295P
  24. Affected versionversion=SA8620P
  25. Affected versionversion=SA8650P
  26. Affected versionversion=SA8770P
  27. Affected versionversion=SA8775P
  28. Affected versionversion=SA9000P
  29. Affected versionversion=SRV1H
  30. Affected versionversion=SRV1L
  31. Affected versionversion=SRV1M

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Qualcomm · Snapdragonversion=QAM8255P; version=QAM8295P; version=QAM8620P; version=QAM8650P; version=QAM8775P; version=QAMSRV1H; version=QAMSRV1M; version=QCA6574; version=QCA6574A; version=QCA6574AU; version=QCA6595; version=QCA6595AU; version=QCA6688AQ; version=QCA6696; version=QCA6698AQ; version=QCA6797AQ; version=SA6155P; version=SA7255P; version=SA7775P; version=SA8155P; version=SA8195P; version=SA8255P; version=SA8295P; version=SA8620P; version=SA8650P; version=SA8770P; version=SA8775P; version=SA9000P; version=SRV1H; version=SRV1L; version=SRV1M

Published CVSS scores

7.8Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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