Bug 1282688 – CVE-2013-7446 kernel: Unix sockets use after free - peer_wait_queue prematurely freed

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Bug 1282688 - (CVE-2013-7446) CVE-2013-7446 kernel: Unix sockets use after free - peer_wait_queue prematurely freed

Summary:	CVE-2013-7446 kernel: Unix sockets use after free - peer_wait_queue premature...

Status:	NEW

Aliases:	CVE-2013-7446

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20150910,repor...
Keywords:	Security

Duplicates:	1273845 (view as bug list)
Depends On:	1282712
Blocks:	1273846
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Reported:	2015-11-17 01:24 EST by Wade Mealing
Modified:	2018-08-28 18:00 EDT (History)
CC List:	18 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	A flaw was found in the Linux kernel's implementation of Unix sockets. A server polling for client-socket data could put the peer socket on a wait list; the peer socket could then close the connection, making the reference on the wait list no longer valid. This could lead to bypassing the permissions on a Unix socket and packets being injected into the stream, and could also panic the machine (denial of service).
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Last Closed:
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Regression:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Wade Mealing 2015-11-17 01:24:11 EST

A flaw was found in the Linux kernels implementation of Unix sockets.  A
server polling for data coming from a client socket may put the peer
socket on a wait list.  This peer may close the connection making
the reference on the wait list no longer valid.  This could lead to bypssing the permissions on a unix socket, and packets being injected into the stream.  This may also panic the machine.

Additional resources:

https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8

http://seclists.org/oss-sec/2015/q4/321

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=7d267278a9ece963d77eefec61630223fce08c6c

Comment 1 Wade Mealing 2015-11-17 03:31:54 EST

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1282712]

Comment 2 Wade Mealing 2015-11-17 23:34:26 EST

*** Bug 1273845 has been marked as a duplicate of this bug. ***

Comment 3 Wade Mealing 2015-11-18 00:34:38 EST

Statement:

This issue does not affect Linux kernels as shipped with Red Hat Enterprise linux 5,7, MRG-2 and realtime kernels.

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 6 and may be addressed in a future update.

This has been rated as having Moderate security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.

Comment 11 Fedora Update System 2015-12-22 02:20:00 EST

kernel-4.2.8-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 12 Fedora Update System 2015-12-22 17:01:13 EST

kernel-4.2.8-300.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

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