CVE-2022-50068

Kernel crash via unchecked TTM resource dereference

Published Jun 18, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux 5.14 through 5.15.62 and 5.16 through 5.19.3 allows local users to crash the kernel. The ttm_bo_validate function reads bo->resource->mem_type when bo->resource is NULL during DRM framebuffer buffer-object validation. A local low-privileged user can reach the faulty TTM path and interrupt availability by causing a kernel fault; no confidentiality or integrity impact is reported.

CVSS severity5.5
Medium
EPSS probability0.22%
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 5.14 through 5.15.62 and 5.16 through 5.19.3 allows local users to crash the kernel. The ttm_bo_validate function reads bo->resource->mem_type when bo->resource is NULL during DRM framebuffer buffer-object validation. A local low-privileged user can reach the faulty TTM path and interrupt availability by causing a kernel fault; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2022-50068
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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=5.14
  2. Affected versionversion=d3116756a710e3cd51293a9d58b525957ab7e784 <76672cd326c146ded2c2712ff257b8908dcf23d8
  3. Affected versionversion=d3116756a710e3cd51293a9d58b525957ab7e784 <9bd970d4097287778a4449452e70b35d0bfaa3aa
  4. Affected versionversion=d3116756a710e3cd51293a9d58b525957ab7e784 <cf4b7387c0a842d64bdd7c353e6d3298174a7740

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=d3116756a710e3cd51293a9d58b525957ab7e784 <76672cd326c146ded2c2712ff257b8908dcf23d8; version=d3116756a710e3cd51293a9d58b525957ab7e784 <9bd970d4097287778a4449452e70b35d0bfaa3aa; version=d3116756a710e3cd51293a9d58b525957ab7e784 <cf4b7387c0a842d64bdd7c353e6d3298174a7740

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Canonical UbuntuCVSS: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

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

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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