Heap Overflow Vulnerability in Linux Kernel Netfilter Component

CVE-2025-22056

What is CVE-2025-22056?

CVE-2025-22056 is a heap overflow vulnerability in the Netfilter component of the Linux kernel, specifically affecting the handling of multiple NFTA_TUNNEL_KEY_OPTS_GENEVE attributes. The flaw arises from improper pointer arithmetic and type conversions, which can result in out-of-bounds writes to the heap. Such vulnerabilities can lead to compromised memory integrity, enabling attackers to manipulate data or execute arbitrary code within the context of a vulnerable application. As many critical services and applications run on the Linux kernel, the exploitation of this vulnerability could severely disrupt operations, degrade system performance, and lead to significant data loss or corruption.

Potential impact of CVE-2025-22056

1. Remote Code Execution: Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code, potentially leading to a complete system compromise. This risk is particularly significant in environments where the Linux kernel is used to handle sensitive data or manage critical infrastructure.

2. Denial of Service (DoS): The heap overflow can cause systems to crash or become unresponsive, leading to denial of service conditions. For organizations reliant on Linux-based systems for uptime and reliability, this could have substantial repercussions on business operations and customer trust.

3. Data Integrity Compromise: The nature of heap overflows can lead to corruption of data within memory. An attacker exploiting this vulnerability could manipulate data structures, potentially leading to further security implications, data breaches, or loss of critical information necessary for organizational operations.

News Articles

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CVE-2025-22056

CVE-2025-22056 Impact, Exploitability, and Mitigation Steps | Wiz

Understand the critical aspects of CVE-2025-22056 with a detailed vulnerability assessment, exploitation potential, affected technologies, and remediation guidance.

4 days ago

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