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CVE-2016-4581

Published: 23 May 2016

fs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted series of mount system calls.

From the Ubuntu security team

It was discovered that in some situations the Linux kernel did not handle propagated mounts correctly. A local unprivileged attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
Patches:
Introduced by f2ebb3a921c1ca1e2ddd9242e95a1989a50c4c68
Fixed by 5ec0811d30378ae104f250bfc9b3640242d81e3f
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.6~rc7)