{"id":34014,"date":"2025-05-01T02:14:59","date_gmt":"2025-05-01T02:14:59","guid":{"rendered":""},"modified":"2025-07-07T23:52:49","modified_gmt":"2025-07-08T05:52:49","slug":"cve-2025-0467-kernel-memory-exploit-in-guest-vms","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-0467-kernel-memory-exploit-in-guest-vms\/","title":{"rendered":"CVE-2025-0467: Kernel Memory Exploit in Guest VMs<\/strong>"},"content":{"rendered":"

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

CVE-2025-0467 is a high severity vulnerability that affects the kernel software running inside a Guest Virtual Machine (VM). This vulnerability involves the exploitation of memory that is shared with the GPU Firmware, leading to potential data writing outside the Guest’s virtualized GPU memory. This could result in a system compromise or data<\/a> leakage, posing significant threats to both system integrity and data security. Given the ubiquity of virtual machines<\/a> in today’s IT infrastructure, this vulnerability is of considerable concern to organizations of all sizes across various industries.<\/p>\n

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

CVE ID: CVE-2025-0467
\nSeverity: High (CVSS: 8.2)
\nAttack Vector: Network
\nPrivileges Required: Low
\nUser Interaction: None
\nImpact: System compromise and potential<\/a> data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Kernel Software | All versions prior<\/a> to patch<\/p>\n

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

The exploit works by manipulating the kernel software inside a Guest<\/a> VM to access memory shared with the GPU Firmware. The attacker can then write data<\/a> outside the Guest’s virtualized GPU memory. This could be used to overwrite important system data or inject<\/a> malicious code, leading to system compromise. The attacker can also potentially<\/a> access sensitive information stored in the GPU memory, leading to data leakage.<\/p>\n

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

Here’s a
\nconceptual<\/strong>
\n example of how the vulnerability might be exploited, assuming the attacker has already obtained access<\/a> to the Guest VM:<\/p>\n

# Gain access to GPU memory\ngpu_mem_access = get_gpu_mem_access()\n# Write data outside the Guest's virtualized GPU memory\nwrite_outside_gpu_mem(gpu_mem_access, \"malicious_data\")<\/code><\/pre>\n
This pseudocode demonstrates the underlying concept of the exploit. The function `get_gpu_mem_access` is used to gain access to the GPU memory, and the function `write_outside_gpu_mem` is used to write data outside the Guest’s virtualized GPU memory<\/a>.<\/p>\n
Mitigation and Prevention<\/strong><\/p>\n
The recommended mitigation for this vulnerability is to apply the vendor’s patch. If a patch is not immediately available, users are advised to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. Regular system and software updates, along with robust cybersecurity<\/a> practices, can help prevent such vulnerabilities from being exploited in the first place.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-0467 is a high severity vulnerability that affects the kernel software running inside a Guest Virtual Machine (VM). This vulnerability involves the exploitation of memory that is shared with the GPU Firmware, leading to potential data writing outside the Guest’s virtualized GPU memory. This could result in a system compromise or data leakage, posing […]<\/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-34014","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