CVE-2016-1575

Priority
Medium
Description
The overlayfs implementation in the Linux kernel through 4.5.2 does not
properly maintain POSIX ACL xattr data, which allows local users to gain
privileges by leveraging a group-writable setgid directory.
Ubuntu-Description
halfdog discovered that OverlayFS in the Linux kernel incorrectly
propagated security sensitive extended attributes, such as POSIX ACLs. A
local unprivileged attacker could use this to gain privileges.
References
Bugs
Notes
 jdstrand> android kernels (flo, goldfish, grouper, maguro, mako and manta) are
  not supported on the Ubuntu Touch 14.10 and earlier preview kernels
 jdstrand> linux-lts-saucy no longer receives official support
 jdstrand> linux-lts-quantal no longer receives official support
 sbeattie> precise does not allow unprivileged user namespaces,
  which is what lets an unprivileged user exploit this vulnerability;
  however, the issue of copying up setuid attributes still exists in
  the overlayfs codebase here, but it is a much lower priority to fix
  (needs root/CAP_SYS_ADMIN to exploit).
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):released (3.13.0-79.123~precise1)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (4.2.0-30.35~14.04.1)
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
linux-vegetahd:needed
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (end-of-life)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Patches:
Package
Source: linux (LP Ubuntu Debian)
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):needed
Ubuntu 14.04 LTS (Trusty Tahr):released (3.13.0-79.123)
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:released (3.19.0-51.57)
Ubuntu 15.10 (Wily Werewolf):released (4.2.0-30.35)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-8.23)
Ubuntu 16.10 (Yakkety Yak):not-affected (4.4.0-21.37)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed by local-2016-1575-1
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed by local-2016-1575-2
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):needed
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (end-of-life)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):needed
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (abandoned)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected (4.4.0-13.29~14.04.1)
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (end-of-life)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):ignored (reached end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (abandoned)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (abandoned)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (3.19.0-51.57~14.04.1)
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:pending
Ubuntu 15.10 (Wily Werewolf):released (4.2.0-1025.32)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.4)
Ubuntu 16.10 (Yakkety Yak):not-affected (4.4.0-1009.10)
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1012.12)
Ubuntu 16.10 (Yakkety Yak):not-affected (4.4.0-1012.12)
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):ignored (reached end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 16.10 (Yakkety Yak):needs-triage
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):ignored (abandoned)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (3.16.0-62.82~14.04.1)
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 16.10 (Yakkety Yak):DNE
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):ignored (reached end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 16.10 (Yakkety Yak):needs-triage
Package
linux-krillin:needed
Package
Upstream:needed
Ubuntu 12.04 LTS (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Touch 15.04:DNE
Ubuntu Core 15.04:DNE
Ubuntu 15.10 (Wily Werewolf):ignored (reached end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 16.10 (Yakkety Yak):needs-triage
More Information

Updated: 2016-08-01 16:21:29 UTC (commit 11295)