Bug 1395187 (CVE-2016-8650) - CVE-2016-8650 kernel: Null pointer dereference via keyctl
Summary: CVE-2016-8650 kernel: Null pointer dereference via keyctl
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-8650
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: 1398455 1398456 1398457 1398458 1398459 1398460 1398461 1398462 1398463
Blocks: 1395193
TreeView+ depends on / blocked
 
Reported: 2016-11-15 11:35 UTC by Andrej Nemec
Modified: 2021-02-17 03:02 UTC (History)
32 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel key management subsystem in which a local attacker could crash the kernel or corrupt the stack and additional memory (denial of service) by supplying a specially crafted RSA key. This flaw panics the machine during the verification of the RSA key.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:02:03 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:0931 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-04-12 14:51:25 UTC
Red Hat Product Errata RHSA-2017:0932 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-04-12 14:51:03 UTC
Red Hat Product Errata RHSA-2017:0933 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2017-04-12 17:29:20 UTC
Red Hat Product Errata RHSA-2018:1854 0 None None None 2018-06-19 04:46:59 UTC

Description Andrej Nemec 2016-11-15 11:35:29 UTC 
A flaw was found in the Linux kernel key management subsystem in which a local attacker could crash the kernel or corrupt the stack and additional memory (denial of service) by supplying a specially crafted RSA key.  This flaw panics the machine during the verification of the RSA key and is key-payload independant.

This vulnerably can be triggered by any unprivileged user with a local shell account.

References:

http://seclists.org/fulldisclosure/2016/Nov/76

Product bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1343162
Comment 1 Wade Mealing 2016-11-24 07:13:14 UTC 
Statement:

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7, MRG-2 and realtime kernels.

This issue does not affect kernels that ship with Red Hat Enterprise Linux 5.
Comment 4 Andrej Nemec 2016-11-24 08:54:24 UTC 
Proposed patch:

https://lkml.org/lkml/2016/11/23/477
Comment 9 Wade Mealing 2016-11-24 23:37:57 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1398463]
Comment 10 errata-xmlrpc 2017-04-12 10:51:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:0932 https://access.redhat.com/errata/RHSA-2017:0932
Comment 11 errata-xmlrpc 2017-04-12 10:55:35 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0931 https://access.redhat.com/errata/RHSA-2017:0931
Comment 12 errata-xmlrpc 2017-04-12 13:29:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:0933 https://access.redhat.com/errata/RHSA-2017:0933
Comment 14 errata-xmlrpc 2018-06-19 04:46:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:1854 https://access.redhat.com/errata/RHSA-2018:1854
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