CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.1. It affects Linux.
CVE
CVE-2018-18559
Severity
HIGH
CVSS
8.1
EPSS
2.61%
Linux
Original NVD Description
In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PACKET socket. This issue exists because of the 15fe076edea787807a7cdc168df832544b58eba6 incomplete fix for a race condition. The code mishandles a certain multithreaded case involving a packet_do_bind unregister action followed by a packet_notifier register action. Later, packet_release operates on only one of the two applicable linked lists. The attacker can achieve Program Counter control.
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