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Bug 922253 - (CVE-2012-6538) CVE-2012-6538 Kernel: xfrm_user: info leak in copy_to_user_auth
CVE-2012-6538 Kernel: xfrm_user: info leak in copy_to_user_auth
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20120919,reported=2...
: Security
Depends On: 922255 922256 922428 922429
Blocks: 858947
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Reported: 2013-03-15 17:02 EDT by Prasad J Pandit
Modified: 2015-07-31 03:01 EDT (History)
26 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-05-03 10:38:46 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Prasad J Pandit 2013-03-15 17:02:49 EDT 
Linux kernel built with XFRM framework support is vulnerable to a memory
leakage flaw. It occurs in routine - copy_to_user_auth - when it fails to
correctly initialise the variable: alg_name.

An user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/4c87308bdea31a7b4828a51f6156e6f721a1fcc9

Reference:
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 -> http://www.openwall.com/lists/oss-security/2013/03/14/21
Comment 1 Prasad J Pandit 2013-03-15 17:08:27 EDT 
Statement:

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

This issue affects the versions of Linux kernel as shipped with Red Hat
Enterprise Linux 6 . This issue has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2013-0744.html.
Comment 3 Petr Matousek 2013-05-03 10:35:27 EDT 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0744 https://rhn.redhat.com/errata/RHSA-2013-0744.html
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