{"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":"CVE-2025-22088: Use-After-Free Vulnerability in Linux Kernel RDMA\/erdma Module<\/strong>"},"content":{"rendered":"

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

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 embedded systems<\/a>, the impact of this vulnerability can be significant.<\/p>\n

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

CVE ID: CVE-2025-22088
\nSeverity: High (7.8 CVSS)
\nAttack Vector: Network
\nPrivileges Required: Low
\nUser Interaction: None
\nImpact: System compromise, potential data leakage<\/a><\/p>\n

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

Product | Affected Versions<\/p>\n

Linux Kernel<\/a> | TBD<\/p>\n

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

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 Linux kernel<\/a>. After the erdma_cep_put(new_cep) function is called, the new_cep object gets deallocated. However, subsequent code still attempts to access<\/a> this deallocated object, leading to a UAF problem. An attacker could exploit this UAF problem to execute arbitrary code<\/a> with kernel privileges or cause the system to crash.<\/p>\n

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

Given the nature of this vulnerability, an exploit would likely involve a sequence of kernel-level operations rather than a simple HTTP request<\/a> or shell command. Therefore, the following pseudocode provides a conceptual illustration of how an attacker might exploit this vulnerability<\/a>:<\/p>\n

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
This exploit would require a deep understanding of kernel<\/a> internals and the specific implementation of the RDMA\/erdma module.<\/p>\n
Mitigation and Patch Information<\/strong><\/p>\n
The recommended mitigation for this 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 vulnerability and only limit the potential<\/a> for exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"
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 […]<\/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-49451","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