CVE-2026-97900

Service hang via unresolved DRM lock contention

Published Sep 25, 2026 · Updated Sep 25, 2026

Denial of service in the Linux DRM execution helper allows local users to hang affected GPU ioctl operations through lock contention. drm_exec_prepare_array() returns success for an empty object array without locking and clearing a previously contended object, causing retry logic to jump back indefinitely. Reachability requires a driver path such as AMDGPU user queues that chains an empty array preparation before a contended nonempty array; the affected operation spins rather than completing.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux DRM execution helper allows local users to hang affected GPU ioctl operations through lock contention. drm_exec_prepare_array() returns success for an empty object array without locking and clearing a previously contended object, causing retry logic to jump back indefinitely. Reachability requires a driver path such as AMDGPU user queues that chains an empty array preparation before a contended nonempty array; the affected operation spins rather than completing.

The record

CVE
CVE-2026-97900
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=09593216bff15866f95c8ad406cb7fdcec1ee40a <159720704d9d652b64390c11fb971e15b0a78d23
  2. Affected versionversion=09593216bff15866f95c8ad406cb7fdcec1ee40a <831cd124ce99c3e61266bed30519d52f7c26abed
  3. Affected versionversion=09593216bff15866f95c8ad406cb7fdcec1ee40a <a565022c02f218ec9789c2baf4690792e7a48cbb
  4. Affected versionversion=09593216bff15866f95c8ad406cb7fdcec1ee40a <f3e74866018dab793ebee1fdf0ef34f7271d1f8c
  5. Affected versionversion=6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=09593216bff15866f95c8ad406cb7fdcec1ee40a <159720704d9d652b64390c11fb971e15b0a78d23; version=09593216bff15866f95c8ad406cb7fdcec1ee40a <831cd124ce99c3e61266bed30519d52f7c26abed; version=09593216bff15866f95c8ad406cb7fdcec1ee40a <a565022c02f218ec9789c2baf4690792e7a48cbb; version=09593216bff15866f95c8ad406cb7fdcec1ee40a <f3e74866018dab793ebee1fdf0ef34f7271d1f8c; version=6.6

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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