Bug 1493435 (CVE-2017-12192) - CVE-2017-12192 kernel: NULL pointer dereference due to KEYCTL_READ on negative key
Summary: CVE-2017-12192 kernel: NULL pointer dereference due to KEYCTL_READ on negativ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-12192
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: 1493436 1498365 1498366 1498367 1498368 1498369 1498370 1498371 1498372 1498373
Blocks: 1493438
TreeView+ depends on / blocked
 
Reported: 2017-09-20 07:59 UTC by Andrej Nemec
Modified: 2021-03-11 15:48 UTC (History)
48 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Key Management sub component of the Linux kernel, where when trying to issue a KEYTCL_READ on a negative key would lead to a NULL pointer dereference. A local attacker could use this flaw to crash the kernel.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:25:42 UTC

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:0151 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2018-01-25 16:17:48 UTC
Red Hat Product Errata RHSA-2020:2430 0 None None None 2020-06-09 20:53:35 UTC

Description Andrej Nemec 2017-09-20 07:59:17 UTC 
A vulnerability in the Key Management sub component was found in the Linux kernel. Trying to KEYTCL_READ on negative key would lead to a NULL pointer dereference. A local attacker could use this flaw to crash the kernel.

References:

https://lkml.org/lkml/2017/9/18/764

http://seclists.org/oss-sec/2017/q4/63

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678
Comment 1 Andrej Nemec 2017-09-20 08:00:25 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1493436]
Comment 3 Wade Mealing 2017-10-04 06:59:54 UTC 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.

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

Future Linux kernel updates for the respective releases will address this issue.
Comment 7 Wade Mealing 2017-10-16 05:25:13 UTC 
External References:

http://seclists.org/oss-sec/2017/q4/63
Comment 12 errata-xmlrpc 2018-01-25 11:25:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0151 https://access.redhat.com/errata/RHSA-2018:0151
Comment 13 errata-xmlrpc 2020-06-09 20:53:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:2430 https://access.redhat.com/errata/RHSA-2020:2430
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