The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.
This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.1, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 15 products from linux, from redhat, from f5 and 12 others, organizations running these solutions should prioritize assessment and patching.
Documented in 2012, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.
2012-05-24T23:55:02.213
2025-04-11T00:51:21.963
Deferred
CVSSv3.1: 9.1 (CRITICAL)
AV:N/AC:L/Au:N/C:N/I:P/A:P
10.0
4.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | linux | linux_kernel | < 3.1 | Yes |
| Operating System | redhat | enterprise_linux | 4.0 | Yes |
| Application | f5 | arx | ≤ 6.4.0 | Yes |
| Application | f5 | big-ip_access_policy_manager | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_access_policy_manager | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_analytics | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_application_security_manager | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_application_security_manager | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_edge_gateway | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_edge_gateway | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_global_traffic_manager | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_global_traffic_manager | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_link_controller | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_link_controller | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_local_traffic_manager | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_local_traffic_manager | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_protocol_security_module | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_protocol_security_module | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_wan_optimization_manager | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_wan_optimization_manager | ≤ 11.1.0 | Yes |
| Application | f5 | big-ip_webaccelerator | ≤ 10.2.4 | Yes |
| Application | f5 | big-ip_webaccelerator | ≤ 11.1.0 | Yes |
| Application | f5 | enterprise_manager | ≤ 2.3.0 | Yes |
| Application | f5 | enterprise_manager | 3.0.0 | Yes |
| Application | f5 | firepass | ≤ 6.1.0 | Yes |
| Application | f5 | firepass | 7.0.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.