Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, requiring local system access to exploit but requires specific conditions to be met though user interaction is required and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 6 products from linux, from redhat, from redhat and 3 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2016-05-02T10:59:12.623
2025-04-12T10:46:40.837
Deferred
CVSSv3.0: 4.7 (MEDIUM)
AV:L/AC:M/Au:N/C:N/I:N/A:C
3.4
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | linux | linux_kernel | ≤ 3.13.3 | Yes |
| Operating System | redhat | enterprise_linux_compute_node_eus | 7.1 | Yes |
| Operating System | redhat | enterprise_linux_for_ibm_z_systems_eus | 7.1_s390x | Yes |
| Operating System | redhat | enterprise_linux_for_power_big_endian_eus | 7.1_ppc64 | Yes |
| Operating System | redhat | enterprise_linux_for_power_little_endian_eus | 7.1_ppc64le | Yes |
| Operating System | redhat | enterprise_linux_server_eus | 7.1 | 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.