{"id":59702,"date":"2025-07-28T09:41:00","date_gmt":"2025-07-28T09:41:00","guid":{"rendered":""},"modified":"2025-10-02T05:37:04","modified_gmt":"2025-10-02T11:37:04","slug":"cve-2025-0819-use-after-free-vulnerability-in-arm-ltd-gpu-kernel-drivers","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-0819-use-after-free-vulnerability-in-arm-ltd-gpu-kernel-drivers\/","title":{"rendered":"CVE-2025-0819: Use After Free Vulnerability in Arm Ltd GPU Kernel Drivers<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

In the dynamic landscape of cybersecurity, a critical vulnerability, CVE-2025-0819, has been discovered in various GPU kernel drivers developed by Arm Ltd, a leading technology provider of silicon IP and custom SoCs. This vulnerability exposes systems to potential compromise and data leakage, making it a significant concern for organizations that rely on these GPU drivers for their operations. The affected drivers include Bifrost GPU Kernel Driver, Valhall GPU Kernel Driver, and Arm 5th Gen GPU<\/a> Architecture Kernel Driver.
\nThe vulnerability essentially allows<\/a> a local non-privileged user process to perform valid GPU memory processing operations on already freed memory. Consequently, it opens up the potential for unauthorized<\/a> access to sensitive data and compromises system integrity.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-0819
\nSeverity: High (7.8 CVSS Score)
\nAttack Vector: Local
\nPrivileges Required: None (Non-Privileged User Process)
\nUser Interaction: None
\nImpact: Potential system compromise<\/a> and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Bifrost GPU Kernel Driver<\/a> | r44p0 through r49p3, r50p0 through r51p0
\nValhall GPU Kernel Driver<\/a> | r44p0 through r49p3, r50p0 through r54p0
\nArm 5th Gen GPU Architecture Kernel Driver | r44p0 through r49p3, r50p0 through r54p0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The CVE-2025-0819 vulnerability is a ‘Use After Free’ type<\/a> of vulnerability. In this vulnerability, an application reuses or references memory<\/a> after it’s been freed or deallocated. In this case, a local non-privileged user process can perform valid GPU memory<\/a> processing operations on already freed memory. This operation could potentially allow an attacker to execute arbitrary code<\/a> or even gain unauthorized access to sensitive data.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

While the specific exploit code would depend on the exact environment and configuration, a conceptual example might look something like this, where a malicious process accesses GPU memory<\/a> after it has been freed:<\/p>\n

void *freedMemory = malloc(100);\nfree(freedMemory);\n\/\/ Malicious process begins\nvoid *maliciousProcess = freedMemory; \/\/ Accessing the freed memory\n*maliciousProcess = \"Malicious data\"; \/\/ Writing malicious data into the freed memory\n\/\/ Malicious process ends<\/code><\/pre>\n
This conceptual example demonstrates how a malicious process could exploit this vulnerability by accessing<\/a> and modifying already freed memory. In the context of the GPU drivers, this could allow unauthorized access to sensitive data<\/a> or potential system compromise.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In the dynamic landscape of cybersecurity, a critical vulnerability, CVE-2025-0819, has been discovered in various GPU kernel drivers developed by Arm Ltd, a leading technology provider of silicon IP and custom SoCs. This vulnerability exposes systems to potential compromise and data leakage, making it a significant concern for organizations that rely on these GPU […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[88],"product":[95],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59702","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux","product-linux-kernel"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t