The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.3, 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 limited data confidentiality, for affected systems. Impacting 19 products from linux, from debian, from netapp and 16 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-01-16T16:15:16.950
2024-11-21T04:32:58.140
Modified
CVSSv3.1: 5.3 (MEDIUM)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | linux | linux_kernel | ≤ 5.3.10 | Yes |
| Operating System | debian | debian_linux | 8.0 | Yes |
| Operating System | netapp | a700s_firmware | - | Yes |
| Hardware | netapp | a700s | - | No |
| Operating System | netapp | 8300_firmware | - | Yes |
| Hardware | netapp | 8300 | - | No |
| Operating System | netapp | 8700_firmware | - | Yes |
| Hardware | netapp | 8700 | - | No |
| Operating System | netapp | a400_firmware | - | Yes |
| Hardware | netapp | a400 | - | No |
| Operating System | netapp | h610s_firmware | - | Yes |
| Hardware | netapp | h610s | - | No |
| Application | netapp | active_iq_unified_manager | - | Yes |
| Application | netapp | cloud_backup | - | Yes |
| Application | netapp | data_availability_services | - | Yes |
| Application | netapp | e-series_santricity_os_controller | ≤ 11.70.1 | Yes |
| Application | netapp | hci_management_node | - | Yes |
| Application | netapp | solidfire | - | Yes |
| Application | netapp | steelstore_cloud_integrated_storage | - | 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.