Bug 1367091 - (CVE-2016-6828) CVE-2016-6828 kernel: Use after free in tcp_xmit_retransmit_queue
CVE-2016-6828 kernel: Use after free in tcp_xmit_retransmit_queue
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20160815,repor...
: Security
Depends On: 1379531 1379533 1379535 1367092 1379526 1379527 1379529 1379530 1379532 1379534
Blocks: 1367094
  Show dependency treegraph
 
Reported: 2016-08-15 09:31 EDT by Adam Mariš
Modified: 2017-01-17 13:23 EST (History)
40 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection.
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Adam Mariš 2016-08-15 09:31:55 EDT
A use after free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions.  This condition could allow an attacker to send an incorrect selective acknowledgement to existing connections, possibly resetting a connection.

Public via (contains reproducer and KASAN report):

http://seclists.org/oss-sec/2016/q3/280

Upstream fix:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4
Comment 1 Adam Mariš 2016-08-15 09:32:40 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1367092]
Comment 2 Justin M. Forbes 2016-08-17 09:41:14 EDT
Patch was posted, introduced in 2.6.

http://marc.info/?l=linux-netdev&m=147143860012027&w=2
Comment 3 Fedora Update System 2016-08-23 08:47:46 EDT
kernel-4.6.7-300.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2016-08-23 11:21:35 EDT
kernel-4.6.7-200.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2016-09-02 16:51:39 EDT
kernel-4.7.2-201.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-09-02 19:20:15 EDT
kernel-4.7.2-101.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Wade Mealing 2016-09-27 01:21:23 EDT
Statement:                                                                                                                        
This issue affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
Comment 15 errata-xmlrpc 2017-01-10 12:08:47 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0036 https://rhn.redhat.com/errata/RHSA-2017-0036.html
Comment 16 errata-xmlrpc 2017-01-17 13:00:49 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 17 errata-xmlrpc 2017-01-17 13:18:49 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 18 errata-xmlrpc 2017-01-17 13:23:55 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

Note You need to log in before you can comment on or make changes to this bug.