What is CVE-2022-46891?

CVE-2022-46891 is a high-severity vulnerability in Arm Bifrost GPU Kernel Driver, classified under Use After Free. CVSS score: 8.8/10. Published 2023-01-17.

How severe is CVE-2022-46891?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-46891 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Arm Bifrost GPU Kernel Driver

CVE-2022-46891

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.

Vulnerability class: Use-After-Free

EPSS: 0.008 (53.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

1337eng/arm_

References

cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2022-46891?: CVE-2022-46891 is a high-severity vulnerability in Arm Bifrost GPU Kernel Driver, classified under Use After Free. CVSS score: 8.8/10. Published 2023-01-17.
How severe is CVE-2022-46891?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-46891 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.