CVE-2017-5551

Priority
Medium
Description
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before
4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs
filesystem, which allows local users to gain group privileges by leveraging
the existence of a setgid program with restrictions on execute permissions.
NOTE: this vulnerability exists because of an incomplete fix for
CVE-2016-7097.
Ubuntu-Description
It was discovered that the Linux kernel did not clear the setgid bit during
a setxattr call on a tmpfs filesystem. A local attacker could use this to
gain elevated group privileges.
References
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
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):not-affected
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored (end-of-life)
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 17.04 (Zesty Zapus):DNE
Package
linux-vegetahd:not-affected
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Patches:
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1003.3)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):not-affected (4.10.0-19.21)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected
Ubuntu 14.04 LTS (Trusty Tahr):not-affected
Ubuntu Core 15.04:not-affected
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-67.88)
Ubuntu 17.04 (Zesty Zapus):not-affected (4.10.0-8.10)
Patches:
Introduced by 073931017b49d9458aa351605b43a7e34598caefFixed by 497de07d89c1410d76a15bec2bb41f24a2a89f31
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was not-affected)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was not-affected)
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):released (4.4.0-67.88~14.04.1)
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [end-of-life])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.10.0-1003.3)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.10.0-14.16~16.04.1)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.11.0-1005.5)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):not-affected
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1009.18)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):not-affected (4.10.0-1004.6)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:ignored (was needs-triage now end-of-life)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1048.55)
Ubuntu 17.04 (Zesty Zapus):not-affected (4.10.0-1001.3)
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):not-affected (4.4.0-1055.59)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1051.55)
Ubuntu 17.04 (Zesty Zapus):released (4.4.0-1055.59)
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was ignored [abandoned])
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored (end-of-life)
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 17.04 (Zesty Zapus):DNE
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 17.04 (Zesty Zapus):not-affected
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):DNE
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.10.0-27.30~16.04.2)
Ubuntu 17.04 (Zesty Zapus):DNE
Package
linux-krillin:not-affected
Package
Upstream:released (4.10~rc4)
Ubuntu 17.10 (Artful Aardvark):DNE
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):ignored
Ubuntu Core 15.04:DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 17.04 (Zesty Zapus):DNE
More Information

Updated: 2017-08-17 22:14:29 UTC (commit 13129)