CVE-2025-22098

DisplayPort operation hang via recursive mutex lock

Published Apr 16, 2025 · Updated May 11, 2026

Improper locking in Linux 6.13 before 6.13.11 and 6.14 before 6.14.2 allows local users to hang a DisplayPort debugfs write. The zynqmp_dp_ignore_hpd_set() handler locks dp->lock, updates ignore_hpd, and then locks the same nonrecursive mutex again instead of unlocking it. Reachability requires root or CAP_SYS_ADMIN access to the ZynqMP DisplayPort debugfs interface; the deadlock leaves dp->lock held.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in Linux 6.13 before 6.13.11 and 6.14 before 6.14.2 allows local users to hang a DisplayPort debugfs write. The zynqmp_dp_ignore_hpd_set() handler locks dp->lock, updates ignore_hpd, and then locks the same nonrecursive mutex again instead of unlocking it. Reachability requires root or CAP_SYS_ADMIN access to the ZynqMP DisplayPort debugfs interface; the deadlock leaves dp->lock held.

The record

CVE
CVE-2025-22098
Published
Apr 16, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 16, 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=28edaacb821c69241f6c0be6bbd29f7145f1b44f <3f988cd2f65175e79349961a43a9deb115174784
  2. Affected versionversion=28edaacb821c69241f6c0be6bbd29f7145f1b44f <7a8d53aa5b7d2a89cda598239d08423bd66920f1
  3. Affected versionversion=28edaacb821c69241f6c0be6bbd29f7145f1b44f <f887685ee0eb4ef716391355568181230338f6eb
  4. Affected versionversion=6.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=28edaacb821c69241f6c0be6bbd29f7145f1b44f <3f988cd2f65175e79349961a43a9deb115174784; version=28edaacb821c69241f6c0be6bbd29f7145f1b44f <7a8d53aa5b7d2a89cda598239d08423bd66920f1; version=28edaacb821c69241f6c0be6bbd29f7145f1b44f <f887685ee0eb4ef716391355568181230338f6eb; version=6.13

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
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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