CVE-2017-13693

Name	CVE-2017-13693
Description	The acpi_ds_create_operands() function in drivers/acpi/acpica/dsutils.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.
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	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
acpica-unix (PTS)	stretch	20160831-1	vulnerable
	buster	20181213-1	fixed
	bullseye	20190509-1	fixed
	sid	20200925-1	fixed
linux (PTS)	stretch	4.9.228-1	vulnerable
	stretch (security)	4.9.240-2	vulnerable
	buster	4.19.146-1	vulnerable
	buster (security)	4.19.152-1	vulnerable
	bullseye, sid	5.9.11-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
acpica-unix	source	(unstable)	20180209-1	unimportant
linux	source	(unstable)	(unfixed)	unimportant

https://patchwork.kernel.org/patch/9919053/
non-issue/no relevant security impact