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LIN6-15139 : Security Advisory - linux - CVE-2018-18559

Created: Oct 31, 2018    Updated: Aug 4, 2019
Resolved Date: Mar 12, 2019
Found In Version: 6.0.0.38
Severity: Standard
Applicable for: Wind River Linux 6
Component/s: Kernel

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.

https://nvd.nist.gov/vuln/detail/CVE-2018-18559
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