CVE-2016-9576

Name	CVE-2016-9576
Description	The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.
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)
References	DLA-772-1
NVD severity	high (attack range: local)

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	fixed
	jessie (security)	3.16.59-1	fixed
	stretch	4.9.110-1	fixed
	stretch (security)	4.9.110-3+deb9u6	fixed
	buster, sid	4.18.10-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
linux	source	(unstable)	4.8.15-1	high
linux	source	jessie	3.16.39-1	high
linux	source	wheezy	3.2.84-1	high	DLA-772-1

Notes

https://marc.info/?l=linux-scsi&m=148010092224801&w=2
https://gist.githubusercontent.com/dvyukov/80cd94b4e4c288f16ee4c787d404118b/raw/10536069562444da51b758bb39655b514ff93b45/gistfile1.txt
Fixed by: https://git.kernel.org/linus/a0ac402cfcdc904f9772e1762b3fda112dcc56a0 (v4.9)