Fixed
Created: Aug 20, 2019
Updated: Sep 24, 2019
Resolved Date: Sep 23, 2019
Found In Version: 7.0.0.1
Severity: Standard
Applicable for: Wind River Linux 7
Component/s: Kernel
In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation. NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139.
CREATE(Triage):(User=admin) [CVE-2019-15239|https://nvd.nist.gov/vuln/detail/CVE-2019-15239]
