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CVE-2016-1237

Published: 29 June 2016

nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions by setting a POSIX ACL, related to nfs2acl.c, nfs3acl.c, and nfs4acl.c.

From the Ubuntu security team

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
Patches:
Introduced by 4ac7249ea5a0ceef9f8269f63f33cc873c3fac61
Fixed by 485e71e8fb6356c08c7fc6bcce4bf02c9a9a663f
Introduced by 4ac7249ea5a0ceef9f8269f63f33cc873c3fac61
Fixed by 999653786df6954a31044528ac3f7a5dadca08f4
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc5)

Notes

AuthorNote
mdeslaur
also needs 485e71e8fb6356c08c7fc6bcce4bf02c9a9a663f
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

References