CVE-2016-4581

MEDIUM

Canonical Ubuntu Linux < 4.5.3 - Denial of Service

Title source: rule

Description

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.

References (22)

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2584.html

[Vendor Advisory] http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

[Vendor Advisory] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2574.html

[Third Party Advisory] http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/90607

[Third Party Advisory] http://www.ubuntu.com/usn/USN-2989-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-2998-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3000-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3001-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3002-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3003-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3004-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3005-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3006-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3007-1

[Issue Tracking, Third Party Advisory, VDB Entry] https://bugzilla.redhat.com/show_bug.cgi?id=1333712

[Vendor Advisory] https://github.com/torvalds/linux/commit/5ec0811d30378ae104f250bfc9b3640242d81e3f

[Patch] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5ec0811d30378ae104f250bfc9b3640242d81e3f

... and 2 more

Scores

CVSS v3 5.5

EPSS 0.0003

EPSS Percentile 8.3%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

Status draft

Affected Products (6)

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

linux/linux_kernel < 4.5.3

oracle/linux

Timeline

Published May 23, 2016

Tracked Since Feb 18, 2026