CVE-2018-18559

 

Published at: - 22-10-2018 06:29

Last modified: - 26-10-2022 01:44

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://blogs.securiteam.com/index.php/archives/3731
• RHSA-2019:0188-Third Party Advisory
• RHSA-2019:0163-Third Party Advisory
• RHBA-2019:0327-Third Party Advisory
• RHSA-2019:1170-
• RHSA-2019:1190-
• RHSA-2019:3967-
• RHSA-2019:4159-
• RHSA-2020:0174-

 

Keywords

NVD

 

CVE-2018-18559

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures