Bug 871556 (CVE-2013-7348) - VUL-0: CVE-2013-7348: kernel: aio: double free in ioctx_alloc
Summary: VUL-0: CVE-2013-7348: kernel: aio: double free in ioctx_alloc
Status: RESOLVED FIXED
Alias: CVE-2013-7348
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Jan Kara
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/97508/
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Reported: 2014-04-02 07:42 UTC by Alexander Bergmann
Modified: 2014-06-17 08:37 UTC (History)
2 users (show)

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Found By: Security Response Team
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Marketing QA Status: ---
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Description Alexander Bergmann 2014-04-02 07:42:59 UTC 
Via rh#1083270:

ioctx_alloc() calls aio_setup_ring() to allocate a ring. If aio_setup_ring() fails to do so it would call aio_free_ring() before returning, but ioctx_alloc() would call aio_free_ring() again causing a double free of the ring. 

Upstream fix:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d558023207e008a4476a3b7bb8706b2a2bf5d84f

CVE-2013-7348 was assigned to this issue.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1083270
Comment 1 Swamp Workflow Management 2014-04-02 22:00:12 UTC 
bugbot adjusting priority
Comment 2 Michal Hocko 2014-04-15 09:23:06 UTC 
This seems to be a fallout from 3dc9acb676003 which reorganized aio_setup_ring. None  This is 3.13 so we shouldn't be affected.
Comment 5 Jan Kara 2014-06-17 08:37:17 UTC 
After checking in detail - we already got the fix and all the relevant fixups from stable tree.