FreeBSD : FreeBSD -- Deadlock in the NFS server (6a384960-6007-11e6-a6c3-14dae9d210b8)

Medium Nessus Plugin ID 92898


The remote FreeBSD host is missing one or more security-related updates.


The kernel holds a lock over the source directory vnode while trying to convert the target directory file handle to a vnode, which needs to be returned with the lock held, too. This order may be in violation of normal lock order, which in conjunction with other threads that grab locks in the right order, constitutes a deadlock condition because no thread can proceed. Impact : An attacker on a trusted client could cause the NFS server become deadlocked, resulting in a denial of service.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 92898

File Name: freebsd_pkg_6a384960600711e6a6c314dae9d210b8.nasl

Version: $Revision: 2.1 $

Type: local

Published: 2016/08/12

Modified: 2016/08/12

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4

Temporal Score: 3.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD-kernel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/08/11

Vulnerability Publication Date: 2014/04/08

Reference Information

CVE: CVE-2014-1453

BID: 66726

OSVDB: 105603

FreeBSD: SA-14:05.nfsserver