CVE-2017-5123

Source
Severity High
Remote No
Type Privilege escalation
Description
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 escalation.
Group Package Affected Fixed Severity Status Ticket
AVG-455 linux-lts 4.9.55-1 4.9.56-1 High Not affected
AVG-446 linux-hardened 4.13.6.a-1 4.13.7.a-1 High Fixed
AVG-445 linux-zen 4.13.6-1 4.13.7-1 High Fixed
AVG-444 linux 4.13.6-1 4.13.7-1 High Fixed
Date Advisory Group Package Severity Description
17 Oct 2017 ASA-201710-26 AVG-444 linux High privilege escalation
16 Oct 2017 ASA-201710-25 AVG-446 linux-hardened High privilege escalation
16 Oct 2017 ASA-201710-24 AVG-445 linux-zen High privilege escalation
References
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96ca579a1ecc943b75beba58bebb0356f6cc4b51
Notes
Introduced by: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c48abe91be03d191d0c20cc755877da2cb35622