Bug 1397930 - (CVE-2016-9555) CVE-2016-9555 kernel: Slab out-of-bounds access in sctp_sf_ootb()
CVE-2016-9555 kernel: Slab out-of-bounds access in sctp_sf_ootb()
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20161025,repor...
: Security
Depends On: 1397931 1399455 1399456 1399457 1399458 1399459 1399460 1399461 1399462 1399463
Blocks: 1397933
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Reported: 2016-11-23 10:26 EST by Adam Mariš
Modified: 2017-03-05 17:59 EST (History)
41 users (show)

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Doc Text:
A flaw was found in the Linux kernel's implementation of the SCTP protocol. A remote attacker could trigger an out-of-bounds read with an offset of up to 64kB potentially causing the system to crash.
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Description Adam Mariš 2016-11-23 10:26:49 EST
A flaw was found in the Linux kernels implementation of sctp protocol in which a remote attacker can trigger an out of bounds read with an offset of up to 64kB.  This may panic the machine with a page-fault and the out-of-bounds data does not seem to be returned to the remote attacker.

For this attack to be sucessful, the kernel needs to have both the SCTP protocol module loaded and a process listening as an SCTP server.

Upstream patch:

https://github.com/torvalds/linux/commit/bf911e985d6bbaa328c20c3e05f4eb03de11fdd6

CVE assignment:

http://seclists.org/oss-sec/2016/q4/509
Comment 1 Adam Mariš 2016-11-23 10:27:43 EST
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1397931]
Comment 2 Justin M. Forbes 2016-11-23 12:51:38 EST
This issue was resolved in the 4.8.8 stable release and was released as an update to all supported Fedora versions.
Comment 3 Wade Mealing 2016-11-29 00:42:57 EST
Statement:

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, 7, MRG-2 and realtime and will be addressed in future updates.
Comment 14 errata-xmlrpc 2017-01-17 13:02:16 EST
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:0113 https://rhn.redhat.com/errata/RHSA-2017-0113.html
Comment 15 errata-xmlrpc 2017-01-17 13:17:48 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0086 https://rhn.redhat.com/errata/RHSA-2017-0086.html
Comment 16 errata-xmlrpc 2017-01-17 13:25:17 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0091 https://rhn.redhat.com/errata/RHSA-2017-0091.html
Comment 17 errata-xmlrpc 2017-02-23 12:40:59 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0307 https://rhn.redhat.com/errata/RHSA-2017-0307.html

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