8.8
HIGH
CVE-2022-46891
Arm Mali GPU Kernel Driver Use-After-Free Vulnerability
Description

An issue was discovered in the Arm Mali GPU Kernel Driver. There is a use-after-free. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Midgard r13p0 through r32p0, Bifrost r1p0 through r40p0, and Valhall r19p0 through r40p0.

INFO

Published Date :

Jan. 17, 2023, 8:15 a.m.

Last Modified :

Nov. 21, 2024, 7:31 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2022-46891 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2022-46891 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Arm bifrost_gpu_kernel_driver
2 Arm midgard_gpu_kernel_driver
3 Arm valhall_gpu_kernel_driver
: Total Affected Vendor : 1 | Products : 3
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-46891.

URL Resource
https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities Vendor Advisory
https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
1337eng/arm_mali_open_source_drivers

Arm mali open source drivers

Makefile C Assembly Starlark

Updated: 8 months, 4 weeks ago
0 stars 0 fork 0 watcher
Born at : Nov. 4, 2024, 1:50 p.m. This repo has been linked 46 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-46891 vulnerability anywhere in the article.

  • Daily CyberSecurity
Arm’s SME2 Supercharges Mobile AI: 6x Faster Responses & On-Device Gemma 3

As AI applications at the device level continue to gain traction, with increasing complexity in tasks ranging from photography and voice recognition to video processing and interaction with AI assista ... Read more

Published Date: Jul 17, 2025 (2 weeks, 4 days ago)
CVE-2022-46891

The following table lists the changes that have been made to the CVE-2022-46891 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Dec. 14, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:arm:bifrost:*:*:*:*:*:*:*:* versions from (including) r1p0 up to (including) r40p0 *cpe:2.3:a:arm:midgard:*:*:*:*:*:*:*:* versions from (including) r13p0 up to (including) r32p0 *cpe:2.3:a:arm:valhall:*:*:*:*:*:*:*:* versions from (including) r19p0 up to (including) r40p0 OR *cpe:2.3:a:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:* versions from (including) r1p0 up to (including) r40p0 *cpe:2.3:a:arm:midgard_gpu_kernel_driver:*:*:*:*:*:*:*:* versions from (including) r13p0 up to (including) r32p0 *cpe:2.3:a:arm:valhall_gpu_kernel_driver:*:*:*:*:*:*:*:* versions from (including) r19p0 up to (including) r40p0
  • Initial Analysis by [email protected]

    Jan. 24, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities No Types Assigned https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities Vendor Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:a:arm:bifrost:*:*:*:*:*:*:*:* versions from (including) r1p0 up to (including) r40p0 *cpe:2.3:a:arm:midgard:*:*:*:*:*:*:*:* versions from (including) r13p0 up to (including) r32p0 *cpe:2.3:a:arm:valhall:*:*:*:*:*:*:*:* versions from (including) r19p0 up to (including) r40p0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-46891 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-46891 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.20 }} -0.14%

score

0.38790

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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