CVE-2022-50417

Local kernel memory corruption via GEM handle race

Published Sep 18, 2025 · Updated Sep 18, 2025

Use-after-free in the Linux kernel Panfrost driver allows local users to corrupt kernel memory via a GEM-handle race. The panfrost_gem_create_with_handle() path returns a buffer object whose sole reference belongs to a predictable handle, then dereferences it during mapping after another thread can close that handle. A user with Panfrost DRM ioctl access must win the close race; the resulting stale buffer-object dereference can compromise the kernel.

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 the Linux kernel Panfrost driver allows local users to corrupt kernel memory via a GEM-handle race. The panfrost_gem_create_with_handle() path returns a buffer object whose sole reference belongs to a predictable handle, then dereferences it during mapping after another thread can close that handle. A user with Panfrost DRM ioctl access must win the close race; the resulting stale buffer-object dereference can compromise the kernel.

The record

CVE
CVE-2022-50417
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
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=5.2
  2. Affected versionversion=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c
  3. Affected versionversion=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2
  4. Affected versionversion=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <4217c6ac817451d5116687f3cc6286220dc43d49
  5. Affected versionversion=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a
  6. Affected versionversion=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <ba3d2c2380e7129b525a787489c0b7e819a3b898

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c; version=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2; version=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <4217c6ac817451d5116687f3cc6286220dc43d49; version=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <4f1105ee72d8c7c35d90e3491b31b2d9d6b7e33a; version=f3ba91228e8e917e5bd6c4b72bfe846933d17370 <ba3d2c2380e7129b525a787489c0b7e819a3b898

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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

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-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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