Bug 1267261 (CVE-2015-8324) - CVE-2015-8324 kernel: Null pointer dereference when mounting ext4
Summary: CVE-2015-8324 kernel: Null pointer dereference when mounting ext4
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2015-8324
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1266862
Blocks: 1267262
TreeView+ depends on / blocked
 
Reported: 2015-09-29 13:31 UTC by Adam Mariš
Modified: 2023-05-12 21:58 UTC (History)
25 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2015-11-24 10:22:42 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:0855 0 normal SHIPPED_LIVE Moderate: kernel security, bug fix, and enhancement update 2016-05-10 22:43:57 UTC

Description Adam Mariš 2015-09-29 13:31:54 UTC 
It was reported that there are some exit points in ext4_fill_super which result in destruction of workqueue which is not yet initialized, leading to kernel NULL pointer dereference.

Oops report can be found in product bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1266862

CVE request:

http://seclists.org/oss-sec/2015/q4/357

CVE assignment:

http://seclists.org/oss-sec/2015/q4/360

Upstream fix (only part of the commit is related):

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=744692dc059845b2a3022119871846e74d4f6e11
Comment 3 Vladis Dronov 2015-11-23 09:16:25 UTC 
Statement:

This problem did not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 7 and MRG-2.
Comment 6 Adam Mariš 2015-12-09 09:27:04 UTC 
Acknowledgements:

Red Hat would like to thank Dmitriy Monakhov of OpenVZ project for reporting this issue.
Comment 7 errata-xmlrpc 2016-05-10 23:16:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0855 https://rhn.redhat.com/errata/RHSA-2016-0855.html
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