Bug 975406 (CVE-2013-2188)

Summary: CVE-2013-2188 kernel: fs: filp leak on ro filesystem
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: agordeev, anton, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mcressma, npajkovs, plougher, rt-maint, rvrbovsk, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2013-06-18 12:01:35 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: 920752, 928683, 1020725    
Bug Blocks: 975408    

Description Petr Matousek 2013-06-18 11:57:12 UTC 
A flaw was found in the way do_filp_open() function in the Linux kernel handled cleanup in case write access to a mount was denied. A local unprivileged user with acces to a read-only mount could use this flaw to crash the system.

This issue affected Red Hat Enterprise Linux 6 only. Upstream is not affected.

Acknowledgements:

This issue was discovered by Mateusz Guzik of Red Hat.
Comment 1 Petr Matousek 2013-06-18 11:58:54 UTC 
Statement:

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux MRG 2.

This issue was addressed in Red Hat Enterprise Linux 6 via RHSA-2013:0911 (https://rhn.redhat.com/errata/RHSA-2013-0911.html).

Upstream is not affected.