[arch-security] [ASA-201710-26] linux: privilege escalation
santiago at archlinux.org
Tue Oct 17 20:23:03 UTC 2017
Arch Linux Security Advisory ASA-201710-26
Date : 2017-10-17
CVE-ID : CVE-2017-5123
Package : linux
Type : privilege escalation
Remote : No
Link : https://security.archlinux.org/AVG-444
The package linux before version 4.13.7-1 is vulnerable to privilege
Upgrade to 4.13.7-1.
# pacman -Syu "linux>=4.13.7-1"
The problem has been fixed upstream in version 4.13.7.
It was discovered that when the waitid() syscall in Linux kernel v4.13
was refactored, it accidentally stopped checking that the incoming
argument was pointing to userspace. This allowed local attackers to
write directly to kernel memory, which could lead to privilege
A local attacker is able to escalate privileges on the affected host.
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