REDHAT-BUG-1308846: Null Pointer Dereference
First published: Tue Feb 16 2016(Updated: )
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): <a class="bz_bug_link bz_secure " title="" href="show_bug.cgi?id=1306851">https://bugzilla.redhat.com/show_bug.cgi?id=1306851</a> Upstream patch: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1306851
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743
- https://access.redhat.com/security/cve/CVE-2016-3070
- https://rhn.redhat.com/errata/RHSA-2016-2574.html
- https://rhn.redhat.com/errata/RHSA-2016-2584.html
- https://access.redhat.com/security/cve/cve-2016-3070
- https://bugzilla.redhat.com/show_bug.cgi?id=1308846
Frequently Asked Questions
What is the severity of REDHAT-BUG-1308846?
REDHAT-BUG-1308846 is categorized as a severe bug due to the potential for a NULL pointer dereference leading to system instability.
What software does REDHAT-BUG-1308846 affect?
REDHAT-BUG-1308846 affects the Red Hat Linux Kernel.
How do I fix REDHAT-BUG-1308846?
To resolve REDHAT-BUG-1308846, it is recommended to apply the latest patches provided by Red Hat for the Linux Kernel.
What are the symptoms of REDHAT-BUG-1308846?
The symptoms of REDHAT-BUG-1308846 may include system crashes or unexpected behavior when performing specific operations with asynchronous I/O.
Is there a workaround for REDHAT-BUG-1308846?
While there is no official workaround for REDHAT-BUG-1308846, minimizing or avoiding the use of the affected asynchronous I/O features may reduce instability.
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