CVE-2025-37886

Kernel memory corruption via stale AdminQ completion

Published May 9, 2025 · Updated Aug 5, 2026

Use-after-return in Linux pds_core allows local users to crash the kernel by completing an AdminQ request after its timeout. The pdsc_adminq_post() function keeps wait_context on its stack, but a timed-out request leaves q_info pointing to that expired completion object for the interrupt handler. Exploitation requires local access to a pds AdminQ device interface and a delayed firmware completion; consequences include a host-kernel crash and memory corruption.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-return in Linux pds_core allows local users to crash the kernel by completing an AdminQ request after its timeout. The pdsc_adminq_post() function keeps wait_context on its stack, but a timed-out request leaves q_info pointing to that expired completion object for the interrupt handler. Exploitation requires local access to a pds AdminQ device interface and a delayed firmware completion; consequences include a host-kernel crash and memory corruption.

The record

CVE
CVE-2025-37886
Published
May 9, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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  1. Affected versionversion=01ba61b55b2041a39c54aefb3153c770dd59a0ef <1d7c4b2b0bbfb09b55b2dc0e2355d7936bf89381
  2. Affected versionversion=01ba61b55b2041a39c54aefb3153c770dd59a0ef <3f77c3dfffc7063428b100c4945ca2a7a8680380
  3. Affected versionversion=01ba61b55b2041a39c54aefb3153c770dd59a0ef <520f012fe75fb8efc9f16a57ef929a7a2115d892
  4. Affected versionversion=01ba61b55b2041a39c54aefb3153c770dd59a0ef <66d7702b42ffdf0dce4808626088268a4e905ca6
  5. Affected versionversion=6.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=01ba61b55b2041a39c54aefb3153c770dd59a0ef <1d7c4b2b0bbfb09b55b2dc0e2355d7936bf89381; version=01ba61b55b2041a39c54aefb3153c770dd59a0ef <3f77c3dfffc7063428b100c4945ca2a7a8680380; version=01ba61b55b2041a39c54aefb3153c770dd59a0ef <520f012fe75fb8efc9f16a57ef929a7a2115d892; version=01ba61b55b2041a39c54aefb3153c770dd59a0ef <66d7702b42ffdf0dce4808626088268a4e905ca6; version=6.4

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS: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-476NULL Pointer Dereference
T1068Exploitation for Privilege Escalation

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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