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 embedded systems, the impact of this vulnerability can be significant.
Vulnerability Summary
CVE ID: CVE-2025-22088
Severity: High (7.8 CVSS)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System compromise, potential data leakage
Affected Products
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Product | Affected Versions
Linux Kernel | TBD
How the Exploit Works
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. After the erdma_cep_put(new_cep) function is called, the new_cep object gets deallocated. However, subsequent code still attempts to access this deallocated object, leading to a UAF problem. An attacker could exploit this UAF problem to execute arbitrary code with kernel privileges or cause the system to crash.
Conceptual Example Code
Given the nature of this vulnerability, an exploit would likely involve a sequence of kernel-level operations rather than a simple HTTP request or shell command. Therefore, the following pseudocode provides a conceptual illustration of how an attacker might exploit this vulnerability:
initialize_new_cep();
call_erdma_cep_put(new_cep);
// new_cep has been freed at this point
access_new_cep(); // This will lead to use-after-freeThis exploit would require a deep understanding of kernel internals and the specific implementation of the RDMA/erdma module.
Mitigation and Patch Information
The recommended mitigation for this vulnerability is the application 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 for exploitation.