CVE-2019-18660

Name	CVE-2019-18660
Description	The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	low

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	jessie	3.16.56-1+deb8u1	vulnerable
	jessie (security)	3.16.81-1	vulnerable
	stretch	4.9.189-3	vulnerable
	stretch (security)	4.9.189-3+deb9u2	vulnerable
	buster	4.19.67-2+deb10u1	vulnerable
	buster (security)	4.19.67-2+deb10u2	vulnerable
	bullseye, sid	5.4.13-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	(unstable)	5.3.15-1

[jessie] - linux <ignored> (powerpc not supported in LTS)
https://www.openwall.com/lists/oss-security/2019/11/27/1