CWE Code: 416
Vulnerability Type: privilege_escalation
CVSS Score: 4.9
CWE Name:  Use After Free
Summary: a use-after-free vulnerability was found in network namespaces code affecting the linux kernel before 4.14.11. the function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. this vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): NONE/NONE/COMPLETE
Published Date: 2018-01-09
Last Modified Date: 2018-05-04