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Bug 1349917 - (CVE-2016-5828) CVE-2016-5828 Kernel: powerpc: tm: crash via exec system call on PPC
CVE-2016-5828 Kernel: powerpc: tm: crash via exec system call on PPC
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=20160624,repor...
: Security
Depends On: 1349238 1349918 1349919 1361108 1361109
Blocks: 1349923
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Reported: 2016-06-24 10:29 EDT by Adam Mariš
Modified: 2018-07-18 10:56 EDT (History)
48 users (show)

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Doc Text:
A vulnerability in the handling of Transactional Memory on powerpc systems was found. An unprivileged local user can crash the kernel by starting a transaction, suspending it, and then calling any of the exec() class system calls.
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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-2016:2574 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2016-11-03 08:06:10 EDT

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Description Adam Mariš 2016-06-24 10:29:51 EDT 
A vulnerability in the handling of Transactional Memory on powerpc systems was found. An unprivileged local user can crash the kernel by starting a transaction, suspending it, and then calling any of the exec() class system calls.

Patch:

https://patchwork.ozlabs.org/patch/636776/

Test case:

https://patchwork.ozlabs.org/patch/636774/

CVE request:

http://seclists.org/oss-sec/2016/q2/595
Comment 1 Adam Mariš 2016-06-24 10:31:01 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1349919]
Comment 2 Adam Mariš 2016-06-24 10:31:27 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1349918]
Comment 5 Prasad J Pandit 2016-07-28 07:06:48 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1361109]
Comment 7 Prasad J Pandit 2016-07-28 07:35:04 EDT 
Statement:

This issue does not affect the versions of Linux kernel as shipped with
Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

This issue affects the version of the kernel packages as shipped with
Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.
Comment 9 Josh Boyer 2016-07-28 09:07:42 EDT 
This was fixed with commit 5b7ef8eff33ff8b3d87071a5fa463da15ec8a0c0 in 4.6.5.  F23 and F24 were rebased yesterday and contain the fix.  F25 and rawhide have the original upstream commit 8e96a87c5431c256feb65bcfc5aec92d9f7839b6 included already.
Comment 11 errata-xmlrpc 2016-11-03 12:45:20 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2574 https://rhn.redhat.com/errata/RHSA-2016-2574.html
Comment 12 errata-xmlrpc 2016-11-03 17:35:53 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2574 https://rhn.redhat.com/errata/RHSA-2016-2574.html
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