Linux Kernel Prior to 5.0.8 Vulnerable to Remote Code Execution

Linux machines running�distributions powered by kernels prior to 5.0.8 are affected by a race condition vulnerability leading to a use after free, related to net namespace cleanup, exposing vulnerable systems to remote attacks.

Potential attackers could exploit the security flaw found in Linux kernel's�rds_tcp_kill_sock TCP/IP implementation in net/rds/tcp.c�to trigger denial-of-service (DoS) states and to execute code remotely on vulnerable Linux machines.

The attacks can be launched with the help of�specially crafted TCP packets sent to vulnerable Linux boxes which can trigger use-after-free errors and enable the attackers to execute arbitrary code on the target system.

The remotely exploitable vulnerability has been assigned a 8.1 high severity base score by NIST's NVD, it is being tracked as�CVE-2019-11815�(Red Hat, Ubuntu, SUSE, and Debian) and it could be abused by unauthenticated attackers without interaction from the user.

Luckily, because the attack complexity is high, the vulnerability received an�exploitability score of 2.2 while the impact score is limited to 5.9.

According to CVSS�3.0 the impact metrics, the�CVE-2019-11815 flaw comes with high confidentiality, integrity, and availability impact which makes it possible for would-be attackers to gain access to all resources, modify an ..