The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 30 products from linux, from debian, from redhat and 27 others, organizations running these solutions should prioritize assessment and patching.
Documented in 2014, 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.
2014-05-07T10:55:04.337
2025-10-22T01:15:53.760
Deferred
CVSSv3.1: 5.5 (MEDIUM)
AV:L/AC:M/Au:N/C:C/I:C/A:C
3.4
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | linux | linux_kernel | < 3.2.59 | Yes |
| Operating System | linux | linux_kernel | < 3.4.91 | Yes |
| Operating System | linux | linux_kernel | < 3.10.40 | Yes |
| Operating System | linux | linux_kernel | < 3.12.20 | Yes |
| Operating System | linux | linux_kernel | < 3.14.4 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | linux | linux_kernel | 2.6.31 | Yes |
| Operating System | debian | debian_linux | 6.0 | Yes |
| Operating System | debian | debian_linux | 7.0 | Yes |
| Operating System | redhat | enterprise_linux | 6.0 | Yes |
| Operating System | redhat | enterprise_linux_eus | 6.3 | Yes |
| Operating System | redhat | enterprise_linux_eus | 6.4 | Yes |
| Operating System | redhat | enterprise_linux_server_eus | 6.3 | Yes |
| Operating System | suse | suse_linux_enterprise_desktop | 11 | Yes |
| Operating System | suse | suse_linux_enterprise_high_availability_extension | 11 | Yes |
| Operating System | suse | suse_linux_enterprise_server | 11 | Yes |
| Operating System | suse | suse_linux_enterprise_server | 11 | Yes |
| Operating System | oracle | linux | 6 | Yes |
| Operating System | canonical | ubuntu_linux | 10.04 | Yes |
| Operating System | canonical | ubuntu_linux | 12.04 | Yes |
| Operating System | canonical | ubuntu_linux | 12.10 | Yes |
| Operating System | canonical | ubuntu_linux | 13.10 | Yes |
| Operating System | canonical | ubuntu_linux | 14.04 | Yes |
| Application | f5 | big-ip_access_policy_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_advanced_firewall_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_analytics | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_application_acceleration_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_application_security_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_edge_gateway | ≤ 11.3.0 | Yes |
| Application | f5 | big-ip_global_traffic_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_link_controller | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_local_traffic_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_policy_enforcement_manager | ≤ 11.5.1 | Yes |
| Application | f5 | big-ip_protocol_security_module | ≤ 11.4.1 | Yes |
| Application | f5 | big-ip_wan_optimization_manager | ≤ 11.3.0 | Yes |
| Application | f5 | big-ip_webaccelerator | ≤ 11.3.0 | Yes |
| Application | f5 | big-iq_application_delivery_controller | 4.5.0 | Yes |
| Application | f5 | big-iq_centralized_management | 4.6.0 | Yes |
| Application | f5 | big-iq_cloud | ≤ 4.5.0 | Yes |
| Application | f5 | big-iq_cloud_and_orchestration | 1.0.0 | Yes |
| Application | f5 | big-iq_device | ≤ 4.5.0 | Yes |
| Application | f5 | big-iq_security | ≤ 4.5.0 | Yes |
| Application | f5 | enterprise_manager | 3.1.0 | Yes |
| Application | f5 | enterprise_manager | 3.1.1 | 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.