vulnerability
CentOS Linux: CVE-2018-18559: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Oct 22, 2018 | Feb 5, 2019 | May 25, 2023 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Oct 22, 2018
Added
Feb 5, 2019
Modified
May 25, 2023
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.
Solution(s)
centos-upgrade-kernelcentos-upgrade-kernel-rt
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