{"id":49451,"date":"2025-06-07T02:43:44","date_gmt":"2025-06-07T02:43:44","guid":{"rendered":""},"modified":"2025-09-29T03:26:48","modified_gmt":"2025-09-29T09:26:48","slug":"cve-2025-22088-use-after-free-vulnerability-in-linux-kernel-rdma-erdma-module","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-22088-use-after-free-vulnerability-in-linux-kernel-rdma-erdma-module\/","title":{"rendered":"<strong>CVE-2025-22088: Use-After-Free Vulnerability in Linux Kernel RDMA\/erdma Module<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-22088 refers to a critical vulnerability identified in the Linux kernel, specifically within the RDMA\/erdma module. This vulnerability, if exploited, could potentially lead to system compromise or data leakage, posing serious consequences for any system running the affected Linux kernel versions. Given the widespread use of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47668-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"57515\">Linux in numerous applications ranging from servers to embedded systems<\/a>, the impact of this vulnerability can be significant.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-22088<br \/>\nSeverity: High (7.8 CVSS)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: System compromise, potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48383-django-select2-vulnerability-risking-data-leakage-and-unauthorized-access\/\"  data-wpil-monitor-id=\"56129\">data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3665820302\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21879-the-linux-kernel-btrfs-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"56540\">Linux Kernel<\/a> | TBD<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploitation of this vulnerability relies on the use-after-free (UAF) flaw in the erdma_accept_newconn() function of the RDMA\/erdma module in the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21893-critical-linux-kernel-vulnerability-in-key-put-function\/\"  data-wpil-monitor-id=\"56818\">Linux kernel<\/a>. After the erdma_cep_put(new_cep) function is called, the new_cep object gets deallocated. However, subsequent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-57819-critical-vulnerability-in-freepbx-allowing-unauthenticated-access-and-remote-code-execution\/\"  data-wpil-monitor-id=\"86558\">code still attempts to access<\/a> this deallocated object, leading to a UAF problem. An attacker could exploit this UAF problem to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48828-arbitrary-php-code-execution-in-vbulletin-via-template-conditionals\/\"  data-wpil-monitor-id=\"55755\">execute arbitrary code<\/a> with kernel privileges or cause the system to crash.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1484649760\" 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>Given the nature of this vulnerability, an exploit would likely involve a sequence of kernel-level operations rather than a simple <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6162-critical-buffer-overflow-vulnerability-in-totolink-ex1200t-http-post-request-handler\/\"  data-wpil-monitor-id=\"86559\">HTTP request<\/a> or shell command. Therefore, the following pseudocode provides a conceptual illustration of how an attacker might <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45997-exploiting-file-upload-vulnerability-in-web-based-pharmacy-product-management-system\/\"  data-wpil-monitor-id=\"57151\">exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">initialize_new_cep();\ncall_erdma_cep_put(new_cep);\n\/\/ new_cep has been freed at this point\naccess_new_cep(); \/\/ This will lead to use-after-free<\/code><\/pre>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0072-local-non-privileged-user-exploit-in-arm-ltd-gpu-kernel-drivers\/\"  data-wpil-monitor-id=\"58216\">exploit would require a deep understanding of kernel<\/a> internals and the specific implementation of the RDMA\/erdma module.<\/p>\n<p><strong>Mitigation and Patch Information<\/strong><\/p>\n<p>The recommended mitigation for this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1277-memory-corruption-vulnerability-in-autodesk-applications-through-malicious-pdf-files\/\"  data-wpil-monitor-id=\"57150\">vulnerability is the application<\/a> of a patch provided by the vendor. If a patch cannot be immediately applied, the use of a web application firewall (WAF) or intrusion detection system (IDS) can serve as a temporary mitigation measure. However, these measures do not fully resolve the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5100-a-double-free-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"56630\">vulnerability and only limit the potential<\/a> for exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-22088 refers to a critical vulnerability identified in the Linux kernel, specifically within the RDMA\/erdma module. This vulnerability, if exploited, could potentially lead to system compromise or data leakage, posing serious consequences for any system running the affected Linux kernel versions. Given the widespread use of Linux in numerous applications ranging from servers to [&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-49451","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\/49451","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=49451"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49451\/revisions"}],"predecessor-version":[{"id":79342,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49451\/revisions\/79342"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=49451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=49451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=49451"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=49451"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=49451"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=49451"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=49451"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=49451"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=49451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}