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Bug 1198503 - (CVE-2014-8172) CVE-2014-8172 kernel: soft lockup on aio
CVE-2014-8172 kernel: soft lockup on aio
Status: CLOSED ERRATA
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=20131109,repor...
: Security
Depends On: 1095072 1112805 1198505
Blocks: 1095320 1198504
  Show dependency tree / graph
 
Reported: 2015-03-04 04:51 EST by Petr Matousek
Modified: 2015-03-30 04:13 EDT (History)
31 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was found that due to excessive files_lock locking, a soft lockup could be triggered in the Linux kernel when performing asynchronous I/O operations. A local, unprivileged user could use this flaw to crash the system.
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Clone Of:
Environment:
Last Closed: 2015-03-30 04:13:04 EDT
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Regression: ---
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Documentation: ---
CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:0290 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2015-03-05 11:13:58 EST
Red Hat Product Errata RHSA-2015:0694 normal SHIPPED_LIVE Important: kernel-rt security, bug fix, and enhancement update 2015-03-17 14:39:44 EDT

  None (edit)
Description Petr Matousek 2015-03-04 04:51:34 EST 
It was found that Linux kernel is susceptible to soft lockup when performing
Asynchronous I/O operations due to files_lock excessive locking. An
unprivileged local user could use this flaw to crash the system.

Upstream patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=eee5cc2702929fd41cce28058dc6d6717f723f87
Comment 3 errata-xmlrpc 2015-03-05 08:05:34 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:0290 https://rhn.redhat.com/errata/RHSA-2015-0290.html
Comment 4 errata-xmlrpc 2015-03-17 10:41:47 EDT 
This issue has been addressed in the following products:

  MRG for RHEL-6 v.2

Via RHSA-2015:0694 https://rhn.redhat.com/errata/RHSA-2015-0694.html
Comment 5 Prasad J Pandit 2015-03-18 09:00:03 EDT 
Statement:

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