CVE-2022-50378

Kernel state corruption via reversed DRM teardown

Published Sep 18, 2025 · Updated Sep 18, 2025

Use-after-free in Linux kernel Meson DRM releases before 6.1 allows local users to trigger a freed-memory read during driver unloading. meson_drv_unbind calls component_unbind_all before drm_dev_put, freeing devres-managed HDMI encoder state that later DRM bridge cleanup accesses. The demonstrated path requires Amlogic Meson display hardware and permission to unload the driver; the invalid kernel-memory access can interrupt the system.

CVSS severity7.8
High
EPSS probability0.16%
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 Linux kernel Meson DRM releases before 6.1 allows local users to trigger a freed-memory read during driver unloading. meson_drv_unbind calls component_unbind_all before drm_dev_put, freeing devres-managed HDMI encoder state that later DRM bridge cleanup accesses. The demonstrated path requires Amlogic Meson display hardware and permission to unload the driver; the invalid kernel-memory access can interrupt the system.

The record

CVE
CVE-2022-50378
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <31c519981eb141c7ec39bfd5be25d35f02edb868
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9190d287f7a6b02b50b510045b0edf448ed68e88
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9d33348513c36337f91f1991da23f41514d4de39
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d76ff04a72f90767455059c8239b06042cd0ed23

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <31c519981eb141c7ec39bfd5be25d35f02edb868; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9190d287f7a6b02b50b510045b0edf448ed68e88; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9d33348513c36337f91f1991da23f41514d4de39; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d76ff04a72f90767455059c8239b06042cd0ed23

Published CVSS scores

7.8CISA ADP VulnrichmentCVSS: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

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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

CWE-416Use After Free

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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