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Vulnerability record · CVE-2022-46891 · published 17 January 2023

CVE-2022-46891: Arm bifrost gpu kernel driver use after free vulnerability

Arm · Bifrost Gpu Kernel Driver

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.

8.8 CVSS 3.1 High EPSS 0.81% · top 44.9% CWE-416 · Use after free
8.8CVSS 3.1 base score
0.81%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2022-38181Arm Mali GPU kernel driver use-after-free via mishandled GPU memory operationsThe Arm Mali GPU kernel driver mishandles GPU memory operations, allowing unprivileged users to access freed memory (CWE-416 use-after-free). It affe…KEVEPSS 14%analysed8.8CVE-2021-29256Arm Mali GPU kernel driver use-after-free allows privilege escalationThe Arm Mali GPU kernel driver contains a use-after-free (CWE-416) that an unprivileged user can trigger to access freed memory. Successful exploitat…KEVEPSS 3.0%analysed8.8CVE-2021-28663Arm Mali GPU kernel driver use-after-free privilege escalationThe Arm Mali GPU kernel driver mishandles GPU memory operations, producing a use-after-free in Bifrost, Valhall and Midgard drivers. A local attacker…KEVEPSS 12%analysed8.8CVE-2021-28664Arm Mali GPU kernel driver out-of-bounds write allows privilege escalationThe Arm Mali GPU kernel driver lets an unprivileged user gain read/write access to read-only pages, causing memory corruption. This can lead to privi…KEVEPSS 5.4%analysed7.8CVE-2024-4610Arm Mali GPU kernel driver use-after-free lets local user access freed memoryThe Arm Bifrost and Valhall GPU kernel drivers contain a use-after-free (CWE-416) reachable by a local non-privileged user performing improper GPU me…KEVEPSS 0.76%analysed7.8CVE-2022-22706Arm Mali GPU Kernel Driver read-only memory write flawThe Arm Mali GPU kernel driver lets a non-privileged user gain write access to read-only memory pages, a memory buffer overflow (CWE-119) affecting M…KEVEPSS 1.1%analysed5.5CVE-2023-4211Arm Mali GPU Kernel Driver use-after-free via improper GPU memory handlingThe Arm Mali GPU kernel driver mishandles GPU memory operations, allowing a use-after-free (CWE-416) in which freed memory can be accessed again. A l…KEVEPSS 1.1%analysed3.3CVE-2023-26083Arm Mali GPU Kernel Driver memory leak exposes kernel metadataThe Arm Mali GPU kernel driver has a memory leak (CWE-401) across Midgard r6p0-r32p0, Bifrost r0p0-r42p0, Valhall r19p0-r42p0, and Avalon r41p0-r42p0…KEVEPSS 1.2%analysed

Source: NIST National Vulnerability Database (record CVE-2022-46891), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.