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Bug 1159313 - (CVE-2014-8559) CVE-2014-8559 kernel: fs: deadlock due to incorrect usage of rename_lock
CVE-2014-8559 kernel: fs: deadlock due to incorrect usage of rename_lock
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20141025,repor...
: Security
Depends On: 1173812 1173813 1173814 1173831 1266516 1266517
Blocks: 1159275
  Show dependency tree / graph
 
Reported: 2014-10-31 09:26 EDT by Prasad J Pandit
Modified: 2018-08-28 17:55 EDT (History)
27 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel's VFS subsystem handled file system locks. A local, unprivileged user could use this flaw to trigger a deadlock in the kernel, causing a denial of service on the system.
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:1976 normal SHIPPED_LIVE Moderate: kernel-rt security, bug fix, and enhancement update 2015-11-03 16:39:30 EST
Red Hat Product Errata RHSA-2015:1977 normal SHIPPED_LIVE Moderate: kernel-rt security, bug fix, and enhancement update 2015-11-03 16:42:40 EST
Red Hat Product Errata RHSA-2015:1978 normal SHIPPED_LIVE Moderate: kernel security, bug fix, and enhancement update 2015-11-03 18:47:34 EST

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Description Prasad J Pandit 2014-10-31 09:26:14 EDT 
Linux kernel built with Virtual File System(VFS) support is vulnerable to a
deadlock condition. It occurs due to incorrect usage of file system locks.

An unprivileged user/process could use this flaw to render the system unusable, thus resulting in DoS.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/ca5358ef75fc69fee5322a38a340f5739d997c10
  -> https://git.kernel.org/linus/946e51f2bf37f1656916eb75bd0742ba33983c28

Reference:
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  -> http://www.openwall.com/lists/oss-security/2014/10/30/7
Comment 1 Prasad J Pandit 2014-12-13 03:35:59 EST 
Statement:

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

This issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future kernel updates for the respective releases may address this issue.
Comment 3 Prasad J Pandit 2014-12-13 03:38:28 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1173814]
Comment 6 Fedora Update System 2014-12-21 01:36:27 EST 
kernel-3.17.7-200.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2014-12-21 21:32:36 EST 
kernel-3.17.7-300.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 errata-xmlrpc 2015-11-03 11:39:40 EST 
This issue has been addressed in the following products:

  MRG for RHEL-6 v.2

Via RHSA-2015:1976 https://rhn.redhat.com/errata/RHSA-2015-1976.html
Comment 10 errata-xmlrpc 2015-11-03 11:42:58 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1977 https://rhn.redhat.com/errata/RHSA-2015-1977.html
Comment 11 errata-xmlrpc 2015-11-03 13:52:59 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1978 https://rhn.redhat.com/errata/RHSA-2015-1978.html
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