{"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":"<strong>CVE-2025-0467: Kernel Memory Exploit in Guest VMs<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>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&#8217;s virtualized GPU memory. This could result in a <a href=\"https:\/\/www.ameeba.com\/blog\/yale-new-haven-health-system-data-breach-a-comprehensive-analysis-of-a-cybersecurity-breach-impacting-5-5-million-patients\/\"  data-wpil-monitor-id=\"38669\">system compromise or data<\/a> leakage, posing significant threats to both system integrity and data security. Given the ubiquity of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52890-critical-acl-bypass-vulnerability-in-incus-system-container-and-virtual-machine-manager\/\"  data-wpil-monitor-id=\"64755\">virtual machines<\/a> in today&#8217;s IT infrastructure, this vulnerability is of considerable concern to organizations of all sizes across various industries.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-0467<br \/>\nSeverity: High (CVSS: 8.2)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32849-vulnerability-in-telecontrol-server-basic-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39180\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-358967687\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Kernel Software | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43865-critical-spoofing-vulnerability-in-react-router-prior-to-version-7-5-2\/\"  data-wpil-monitor-id=\"41497\">versions prior<\/a> to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by manipulating the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46625-root-shell-access-exploit-in-tenda-rx2-pro-router\/\"  data-wpil-monitor-id=\"42903\">kernel software inside a Guest<\/a> VM to access memory shared with the GPU Firmware. The <a href=\"https:\/\/www.ameeba.com\/blog\/ahold-delhaize-cyber-attack-unpacking-the-data-breach-and-its-implications\/\"  data-wpil-monitor-id=\"39179\">attacker can then write data<\/a> outside the Guest&#8217;s virtualized GPU memory. This could be used to overwrite important system <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32843-sql-injection-vulnerability-in-telecontrol-server-basic-leading-to-authorization-bypass-and-data-manipulation\/\"  data-wpil-monitor-id=\"39181\">data or inject<\/a> malicious code, leading to system compromise. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28169-unencrypted-broadcasts-lead-to-potential-man-in-the-middle-attacks-on-byd-qin-plus-dm-i-dilink-os\/\"  data-wpil-monitor-id=\"40646\">attacker can also potentially<\/a> access sensitive information stored in the GPU memory, leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2650345029\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Here&#8217;s a<br \/>\n<strong>conceptual<\/strong><br \/>\n example of how the vulnerability might be exploited, assuming the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47663-unauthenticated-remote-attacker-gaining-full-access-due-to-improper-json-web-tokens-implementation\/\"  data-wpil-monitor-id=\"41652\">attacker has already obtained access<\/a> to the Guest VM:<\/p>\n<pre><code class=\"\" data-line=\"\"># Gain access to GPU memory\ngpu_mem_access = get_gpu_mem_access()\n# Write data outside the Guest&#039;s virtualized GPU memory\nwrite_outside_gpu_mem(gpu_mem_access, &quot;malicious_data&quot;)<\/code><\/pre>\n<p>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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-49835-memory-corruption-vulnerability-leading-to-potential-data-leakage-or-system-compromise\/\"  data-wpil-monitor-id=\"58424\">data outside the Guest&#8217;s virtualized GPU memory<\/a>.<\/p>\n<p><strong>Mitigation and Prevention<\/strong><\/p>\n<p>The recommended mitigation for this vulnerability is to apply the vendor&#8217;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 <a href=\"https:\/\/www.ameeba.com\/blog\/unmasking-the-truth-cybersecurity-lapses-salt-typhoon-and-the-call-for-robust-u-s-cyber-leadership\/\"  data-wpil-monitor-id=\"38668\">robust cybersecurity<\/a> practices, can help prevent such vulnerabilities from being exploited in the first place.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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&#8217;s virtualized GPU memory. This could result in a system compromise or data leakage, posing [&hellip;]<\/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,"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":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=34014"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34014\/revisions"}],"predecessor-version":[{"id":58222,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34014\/revisions\/58222"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=34014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=34014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=34014"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=34014"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=34014"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=34014"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=34014"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=34014"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=34014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}