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Bug 1491344 - (CVE-2017-14340) CVE-2017-14340 kernel: xfs: unprivileged user kernel oops
CVE-2017-14340 kernel: xfs: unprivileged user kernel oops
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=20170913,repor...
: Security
Depends On: 1493018
Blocks: 1490687
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Reported: 2017-09-13 10:21 EDT by Adam Mariš
Modified: 2018-08-28 18:22 EDT (History)
46 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found where the XFS filesystem code mishandles a user-settable inode flag in the Linux kernel prior to 4.14-rc1. This can cause a local denial of service via a kernel panic.
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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-2017:2918 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-10-19 13:24:24 EDT

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Description Adam Mariš 2017-09-13 10:21:08 EDT 
It was found that XFS filesystem code mishandles a user settable inode flag in the Linux kernels prior to 4.14-rc1 which can cause a local denial of service via a kernel panic.

External References:

http://seclists.org/oss-sec/2017/q3/436

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc
Comment 1 Vladis Dronov 2017-09-19 03:30:57 EDT 
Acknowledgments:

Name: Dave Chinner (Red Hat)
Comment 4 Vladis Dronov 2017-09-19 03:52:28 EDT 
Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7  as the code with the flaw is not built in these products due to theirs build configuration.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux MRG-2. Future updates for the respective releases may address this issue.
Comment 5 errata-xmlrpc 2017-10-19 09:28:15 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:2918 https://access.redhat.com/errata/RHSA-2017:2918
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