Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.
First Last Prev Next    This bug is not in your last search results.
Bug 1399519 - (CVE-2016-9313) CVE-2016-9313 kernel: security/keys/big_key.c mishandles unsuccessful crypto registration
CVE-2016-9313 kernel: security/keys/big_key.c mishandles unsuccessful crypto ...
Status: CLOSED NOTABUG
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=20160722,repor...
: Security
Depends On: 1399522
Blocks: 1399529
  Show dependency tree / graph
 
Reported: 2016-11-29 04:06 EST by Andrej Nemec
Modified: 2017-01-25 10:33 EST (History)
38 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
The implementation of big key management in security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2017-01-25 10:33:20 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

  None (edit)
Description Andrej Nemec 2016-11-29 04:06:13 EST 
The linux kernels implementation of "big key" management in security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful
crypto registration in conjunction with successful key-type registration, which
allows local users to cause a denial of service (NULL pointer dereference and
panic) or possibly have unspecified other impact via a crafted application that
uses the big_key data type.

As per the patch notes the Red Hat Enterprise Linux code contains neither big_key_rng and big_key_blkcipher, which can be set to null.  The Red Hat Enterprise Linux source contains no blkcipher code to be affected.

References:

http://seclists.org/oss-sec/2016/q3/130

Upstream patch:

https://github.com/torvalds/linux/commit/7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
Comment 1 Andrej Nemec 2016-11-29 04:08:37 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1399522]
Comment 2 Justin M. Forbes 2016-11-29 11:54:52 EST 
This was fixed in the 4.8.7 kernel update which was available to all fedora releases on November 17 2016
Comment 3 Wade Mealing 2016-12-20 20:53:30 EST 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6 and 7 as the code with the flaw is not present in the products listed.
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.