Bug 922253 (CVE-2012-6538) - CVE-2012-6538 Kernel: xfrm_user: info leak in copy_to_user_auth
Summary: CVE-2012-6538 Kernel: xfrm_user: info leak in copy_to_user_auth
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-6538
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 922255 922256 922428 922429
Blocks: 858947
TreeView+ depends on / blocked
 
Reported: 2013-03-15 21:02 UTC by Prasad Pandit
Modified: 2021-02-17 07:55 UTC (History)
26 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2013-05-03 14:38:46 UTC
Embargoed:

Attachments (Terms of Use)

Description Prasad Pandit 2013-03-15 21:02:49 UTC 
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:
----------
 -> http://www.openwall.com/lists/oss-security/2013/03/14/21
Comment 1 Prasad Pandit 2013-03-15 21:08:27 UTC 
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 14:35:27 UTC 
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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