CVE-2022-46394: arm avalon_gpu_kernel_driver Use After Free
CVSS: 8.8v3.1HighModified
Published 08-03-2023Last modified 05-03-2025
Vulnerability summary
CVE-2022-46394 is a high (CVSS 8.8) Use After Free vulnerability in arm avalon_gpu_kernel_driver. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.2% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.70%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-03-2023PublishedVulnerability first disclosed.
- 05-03-2025Last modifiedVulnerability information updated.
Description
An issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Valhall r39p0 through r41p0 before r42p0, and Avalon r41p0 before r42p0.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.70%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
0.00 pp
From 0.70% on 20-09-2026
20-09-202620-10-2026
EPSS score0.70%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Arm2 products
- avalon_gpu_kernel_driverr41p0
- valhall_gpu_kernel_driver≥ r39p0, ≤ r41p0
1 vendor · 2 products
References
2 links- developer.arm.com/support/arm-security-updatesVendor Advisory