Bug 1338625 (CVE-2016-4951) - CVE-2016-4951 kernel: Null pointer dereference in tipc_nl_publ_dump
Summary: CVE-2016-4951 kernel: Null pointer dereference in tipc_nl_publ_dump
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-4951
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1338626 1346815
Blocks: 1338627
TreeView+ depends on / blocked
 
Reported: 2016-05-23 07:20 UTC by Andrej Nemec
Modified: 2021-02-17 03:51 UTC (History)
35 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A vulnerability was found in the Linux kernel. The pointer to the netlink socket attribute is not checked, which could cause a null pointer dereference when parsing the nested attributes in function tipc_nl_publ_dump(). This allows local users to cause a DoS.
Clone Of:
Environment:
Last Closed: 2016-06-15 11:38:52 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2016-05-23 07:20:11 UTC 
A vulnerability was found in the Linux kernel. The pointer to the netlink socket attribute is not checked, which could cause a null pointer dereference when parsing the nested attributes in function tipc_nl_publ_dump. This allows local users to cause a DoS.

References:

http://lists.openwall.net/netdev/2016/05/14/28

http://lists.openwall.net/netdev/2016/05/16/26

CVE-ID request and assignment:

http://seclists.org/oss-sec/2016/q2/385

http://seclists.org/oss-sec/2016/q2/386

Introduced by:

https://github.com/torvalds/linux/commit/1a1a143daf84db95dd7212086042004a3abb7bc2

Upstream fix:

https://github.com/torvalds/linux/commit/45e093ae2830cd1264677d47ff9a95a71f5d9f9c
Comment 1 Andrej Nemec 2016-05-23 07:21:37 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1338626]
Comment 2 Fedora Update System 2016-06-01 20:23:48 UTC 
kernel-4.4.11-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2016-06-08 22:53:26 UTC 
kernel-4.5.6-200.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Vladis Dronov 2016-06-15 11:38:52 UTC 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2, as there is no code which introduced the flaw in the products listed.
Comment 8 Fedora Update System 2016-06-18 18:49:42 UTC 
kernel-4.5.6-300.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
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