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
Alias: CVE-2015-8324
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Whiteboard: impact=low,public=20151123,reported=2...
Depends On: 1266862
Blocks: 1267262
TreeView+ depends on / blocked
Reported: 2015-09-29 13:31 UTC by Adam Mariš
Modified: 2019-06-08 20:46 UTC (History)
25 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A NULL pointer dereference flaw was found in the way the Linux kernel's ext4 file system driver handled certain corrupted file system images. An attacker with physical access to the system could use this flaw to crash the system.
Clone Of:
Last Closed: 2015-11-24 10:22:42 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:0855 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:


CVE request:


CVE assignment:


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


Comment 3 Vladis Dronov 2015-11-23 09:16:25 UTC

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

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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