Bug 1388821 (CVE-2016-8646) - CVE-2016-8646 kernel: Oops in shash_async_export()
Summary: CVE-2016-8646 kernel: Oops in shash_async_export()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-8646
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: impact=moderate,public=20161115,repor...
: 1390878 (view as bug list)
Depends On: 1387632 1394099 1394100 1394101 1394102 1395044 1459304
Blocks: 1388822
TreeView+ depends on / blocked
 
Reported: 2016-10-26 09:02 UTC by Andrej Nemec
Modified: 2019-06-11 11:13 UTC (History)
22 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel. An unprivileged local user could trigger oops in shash_async_export() by attempting to force the in-kernel hashing algorithms into decrypting an empty data set.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:01:13 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1297 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-05-25 17:28:57 UTC
Red Hat Product Errata RHSA-2017:1298 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2017-05-25 17:39:36 UTC
Red Hat Product Errata RHSA-2017:1308 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2017-05-25 19:32:54 UTC

Description Andrej Nemec 2016-10-26 09:02:11 UTC
A vulnerability was found in the Linux kernel. An unprivileged local user could triger oops in shash_async_export() by attempting to force the in-kernel hashing algorithms into decrypting an empty data set.


Upstream discussion:

https://lkml.org/lkml/2016/10/12/198

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45

Oss-sec post: 
http://www.openwall.com/lists/oss-security/2016/11/15/2

Comment 1 Andrej Nemec 2016-10-26 09:02:25 UTC
Acknowledgments:

Name: Igor Redko (Virtuozzo kernel team)

Comment 2 Wade Mealing 2016-11-07 02:56:21 UTC
*** Bug 1390878 has been marked as a duplicate of this bug. ***

Comment 3 Wade Mealing 2016-11-07 05:30:53 UTC
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 as the code creating this issue is not present in the products listed.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG-2. Future Linux kernel updates for the respective releases might address this issue.

Comment 10 Wade Mealing 2016-11-15 02:19:30 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1395044]

Comment 11 errata-xmlrpc 2017-05-25 13:30:15 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:1297 https://access.redhat.com/errata/RHSA-2017:1297

Comment 12 errata-xmlrpc 2017-05-25 13:40:57 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1298 https://access.redhat.com/errata/RHSA-2017:1298

Comment 13 errata-xmlrpc 2017-05-25 15:37:56 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1308 https://access.redhat.com/errata/RHSA-2017:1308


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