CVE-2022-50556

Kernel crash via unchecked DRM property allocation

Published Oct 22, 2025 · Updated Oct 22, 2025

Null-pointer dereference in Linux kernel DRM allows local users to crash the kernel during graphics-driver initialization. drmm_mode_config_init() ignores a failure from drm_mode_create_standard_properties(), leaving a property pointer null before drm_object_attach_property() dereferences it. The demonstrated path occurs while a privileged user loads the bochs DRM module after an allocation failure; the reported consequence is a kernel fault and service interruption, not data access or code execution.

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 Linux kernel DRM allows local users to crash the kernel during graphics-driver initialization. drmm_mode_config_init() ignores a failure from drm_mode_create_standard_properties(), leaving a property pointer null before drm_object_attach_property() dereferences it. The demonstrated path occurs while a privileged user loads the bochs DRM module after an allocation failure; the reported consequence is a kernel fault and service interruption, not data access or code execution.

The record

CVE
CVE-2022-50556
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record 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=4.0
  2. Affected versionversion=6b4959f43a04e12d39c5700607727f2cbcfeac31 <5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0
  3. Affected versionversion=6b4959f43a04e12d39c5700607727f2cbcfeac31 <834c23e4f798dcdc8af251b3c428ceef94741991
  4. Affected versionversion=6b4959f43a04e12d39c5700607727f2cbcfeac31 <961620ad67611a7320a49f4b6f3c5e2906833a03
  5. Affected versionversion=6b4959f43a04e12d39c5700607727f2cbcfeac31 <b14147464251f66e38fa39f0aae9780466db8610
  6. Affected versionversion=6b4959f43a04e12d39c5700607727f2cbcfeac31 <d06e827a65a6bcd2e329045d891d0739cec1cf4a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.0; version=6b4959f43a04e12d39c5700607727f2cbcfeac31 <5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0; version=6b4959f43a04e12d39c5700607727f2cbcfeac31 <834c23e4f798dcdc8af251b3c428ceef94741991; version=6b4959f43a04e12d39c5700607727f2cbcfeac31 <961620ad67611a7320a49f4b6f3c5e2906833a03; version=6b4959f43a04e12d39c5700607727f2cbcfeac31 <b14147464251f66e38fa39f0aae9780466db8610; version=6b4959f43a04e12d39c5700607727f2cbcfeac31 <d06e827a65a6bcd2e329045d891d0739cec1cf4a

Published CVSS scores

5.5Amazon LinuxCVSS: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.

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

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

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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