CVE-2022-1419Public exploit

Kernel memory disclosure via vgem refcount race

Published May 31, 2022 · Updated Aug 3, 2024

Use-after-free in Linux kernel vgem before 5.6-rc2 allows local users with DRM access to disclose kernel memory via concurrent ioctls. DRM_IOCTL_MODE_DESTROY_DUMB can decrement the object's reference count while vgem_gem_dumb_create still accesses that object. Access to a vgem DRM device is required; the published PoC is unstable, and public evidence does not establish code execution or in-the-wild exploitation.

CVSS severity7.8
High
EPSS probability0.29%
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 vgem before 5.6-rc2 allows local users with DRM access to disclose kernel memory via concurrent ioctls. DRM_IOCTL_MODE_DESTROY_DUMB can decrement the object's reference count while vgem_gem_dumb_create still accesses that object. Access to a vgem DRM device is required; the published PoC is unstable, and public evidence does not establish code execution or in-the-wild exploitation.

The record

CVE
CVE-2022-1419
Published
May 31, 2022
Updated
Aug 3, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=kernel 5.x

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=kernel 5.x

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

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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