Bug 1308846 (CVE-2016-3070) - CVE-2016-3070 kernel: Null pointer dereference in trace_writeback_dirty_page()
Summary: CVE-2016-3070 kernel: Null pointer dereference in trace_writeback_dirty_page()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-3070
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: 1306851 1331967 1331968
Blocks: 1308847
TreeView+ depends on / blocked
 
Reported: 2016-02-16 09:30 UTC by Adam Mariš
Modified: 2021-02-17 04:20 UTC (History)
21 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2019-07-12 13:04:08 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:2574 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2016-11-03 12:06:10 UTC
Red Hat Product Errata RHSA-2016:2584 0 normal SHIPPED_LIVE Important: kernel-rt security, bug fix, and enhancement update 2016-11-03 12:08:49 UTC

Description Adam Mariš 2016-02-16 09:30:23 UTC 
It was reported that attempt to move page mapped by aio ring buffer to other node triggers NULL pointer dereference at trace_writeback_dirty_page(), because aio_fs_backing_dev_info.dev is 0.

Product bug (contains reproducer):

https://bugzilla.redhat.com/show_bug.cgi?id=1306851

Upstream patch:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743
Comment 1 Vladislav Dronov 2016-03-23 18:46:40 UTC 
Acknowledgments:

Name: Jan Stancek (Red Hat)
Comment 2 Vladislav Dronov 2016-03-23 19:04:52 UTC 
Statement:

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

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future updates for the respective releases may address the issue.
Comment 3 Adam Mariš 2016-03-24 08:53:55 UTC 
Internal CVE assignment: CVE-2016-3070
Comment 8 errata-xmlrpc 2016-11-03 15:35:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2574 https://rhn.redhat.com/errata/RHSA-2016-2574.html
Comment 9 errata-xmlrpc 2016-11-03 19:42:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2584 https://rhn.redhat.com/errata/RHSA-2016-2584.html
Comment 10 errata-xmlrpc 2016-11-03 21:32:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2574 https://rhn.redhat.com/errata/RHSA-2016-2574.html
Comment 11 errata-xmlrpc 2016-11-03 21:47:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2584 https://rhn.redhat.com/errata/RHSA-2016-2584.html
Comment 15 Product Security DevOps Team 2019-07-12 13:04:08 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2016-3070
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