CVE-2025-21880

Local system crash via stale userptr rebind

Published Mar 27, 2025 · Updated May 11, 2026

NULL-pointer dereference in the Linux kernel Xe driver allows local users to crash affected systems during GPU userptr rebinding. xe_vm_userptr_pin treats EFAULT as nonfatal, leaving an unpopulated userptr VMA on the preempt_rebind_work_func list for a later bind operation. Low-privileged local access and an Intel Xe GPU workload that encounters EFAULT during a retried pin are required; the reported consequence is availability loss.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in the Linux kernel Xe driver allows local users to crash affected systems during GPU userptr rebinding. xe_vm_userptr_pin treats EFAULT as nonfatal, leaving an unpopulated userptr VMA on the preempt_rebind_work_func list for a later bind operation. Low-privileged local access and an Intel Xe GPU workload that encounters EFAULT during a retried pin are required; the reported consequence is availability loss.

The record

CVE
CVE-2025-21880
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=521db22a1d70dbc596a07544a738416025b1b63c <51cc278f8ffacd5f9dc7d13191b81b912829db59
  2. Affected versionversion=521db22a1d70dbc596a07544a738416025b1b63c <a9f4fa3a7efa65615ff7db13023ac84516e99e21
  3. Affected versionversion=521db22a1d70dbc596a07544a738416025b1b63c <daad16d0a538fa938e344fd83927bbcfcd8a66ec
  4. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=521db22a1d70dbc596a07544a738416025b1b63c <51cc278f8ffacd5f9dc7d13191b81b912829db59; version=521db22a1d70dbc596a07544a738416025b1b63c <a9f4fa3a7efa65615ff7db13023ac84516e99e21; version=521db22a1d70dbc596a07544a738416025b1b63c <daad16d0a538fa938e344fd83927bbcfcd8a66ec; version=6.10

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

T1499Endpoint Denial of Service

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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