CVE-2025-68822

Kernel memory corruption via uncanceled delayed work

Published Jan 13, 2026 · Updated Jan 13, 2026

Use-after-free in the Linux kernel ALPS driver 4.0 and later allows local users to corrupt kernel memory during device detachment. alps_disconnect() frees its alps_data object after flush_workqueue(), but a bare PS/2 packet can queue dev3_register_work afterward and dereference the freed priv and dev3 fields. Reachability requires local low-privileged access, an ALPS touchpad with an external PS/2 device, and a race between detachment and delayed-work scheduling.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel ALPS driver 4.0 and later allows local users to corrupt kernel memory during device detachment. alps_disconnect() frees its alps_data object after flush_workqueue(), but a bare PS/2 packet can queue dev3_register_work afterward and dereference the freed priv and dev3 fields. Reachability requires local low-privileged access, an ALPS touchpad with an external PS/2 device, and a race between detachment and delayed-work scheduling.

The record

CVE
CVE-2025-68822
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <a9c115e017b2c633d25bdfe6709dda6fc36f08c2
  2. Affected versionversion=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <bf40644ef8c8a288742fa45580897ed0e0289474
  3. Affected versionversion=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <ed8c61b89be0c45f029228b2913d5cf7b5cda1a7
  4. Affected versionversion=4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <a9c115e017b2c633d25bdfe6709dda6fc36f08c2; version=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <bf40644ef8c8a288742fa45580897ed0e0289474; version=04aae283ba6a8cd4851d937bf9c6d6ef0361d794 <ed8c61b89be0c45f029228b2913d5cf7b5cda1a7; version=4.0

Published CVSS scores

7.8Linux kernel CNACVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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