CVE-2015-8709

Name	CVE-2015-8709
Description	DISPUTED kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here."
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	fixed
	buster (security)	4.19.269-1	fixed
	bullseye	5.10.158-2	fixed
	bullseye (security)	5.10.162-1	fixed
	bookworm	6.1.15-1	fixed
	sid	6.1.20-1	fixed

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

Package	Type	Release	Fixed Version
linux	source	wheezy	(not affected)
linux	source	jessie	3.16.7-ckt20-1+deb8u2
linux	source	(unstable)	4.3.3-3
linux-2.6	source	(unstable)	(not affected)

Notes

[wheezy] - linux <not-affected> (Vulnerable code not present)
- linux-2.6 <not-affected> (Vulnerable code not present)
CVE Request: https://www.openwall.com/lists/oss-security/2015/12/17/12
https://lkml.org/lkml/2015/12/12/259