CVE-2016-4581

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.

5.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.06%

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Affected: n/a n/a

References

Link	Tags
http://www.ubuntu.com/usn/USN-3006-1	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-3004-1	third party advisory vendor advisory
http://www.securityfocus.com/bid/90607	vdb entry
http://www.ubuntu.com/usn/USN-3001-1	third party advisory vendor advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html	third party advisory
http://www.ubuntu.com/usn/USN-3005-1	third party advisory vendor advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4
http://rhn.redhat.com/errata/RHSA-2016-2584.html	vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	vendor advisory
http://www.ubuntu.com/usn/USN-3000-1	third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1333712	issue tracking vdb entry third party advisory
http://www.debian.org/security/2016/dsa-3607	vendor advisory
https://github.com/torvalds/linux/commit/5ec0811d30378ae104f250bfc9b3640242d81e3f	vendor advisory
http://www.ubuntu.com/usn/USN-3002-1	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2989-1	third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5ec0811d30378ae104f250bfc9b3640242d81e3f
http://www.ubuntu.com/usn/USN-3007-1	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2016/05/11/2	mailing list
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
http://www.ubuntu.com/usn/USN-3003-1	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2998-1	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-4581?: CVE-2016-4581 has been scored as a medium severity vulnerability.
How to fix CVE-2016-4581?: To fix CVE-2016-4581, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4581 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2016-4581 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.