Bug 922344 (CVE-2012-6547)

Summary: CVE-2012-6547 Kernel: net/tun: ioctl() based information leaks
Product: [Other] Security Response Reporter: Prasad Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: agordeev, anton, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, npajkovs, plougher, pmatouse, rt-maint, rvrbovsk, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-04-23 21:20:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 922348, 922349, 922350, 922351    
Bug Blocks: 858947    

Description Prasad Pandit 2013-03-16 10:56:06 UTC
Linux kernel built with Universal TUN/TAP device driver(CONFIG_TUN) support
is vulnerable to an information leakage flaw. It occurs while doing an
ioctl on the character device.

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

Upstream fix:
-------------
 -> https://git.kernel.org/linus/a117dacde0288f3ec60b6e5bcedae8fa37ee0dfc

Reference:
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 -> http://www.openwall.com/lists/oss-security/2013/03/14/21

Comment 1 Prasad Pandit 2013-03-16 11:01:09 UTC
Statement:

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

This issue did affect the version of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

Comment 3 errata-xmlrpc 2013-04-16 19:07:10 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:0747 https://rhn.redhat.com/errata/RHSA-2013-0747.html

Comment 4 errata-xmlrpc 2013-04-23 18:32:21 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