REDHAT-BUG-869904: Race Condition
First published: Thu Oct 25 2012(Updated: )
A race condition flaw has been found in the way asynchronous I/O and fallocate interacted which can lead to exposure of stale data -- that is, an extent which should have had the "uninitialized" bit set indicating that its blocks have not yet been written and thus contain data from a deleted file. An unprivileged local user could use this flaw to cause an information leak. Acknowledgements: Red Hat would like to thank Theodore Ts'o for reporting this issue. Upstream acknowledges Dmitry Monakhov as the original reporter. References: <a href="http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dee1f973ca341c266229faa5a1a5bb268bed3531">http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dee1f973ca341c266229faa5a1a5bb268bed3531</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dee1f973ca341c266229faa5a1a5bb268bed3531
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=633181
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=633181&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=869904#c0
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=869909
- https://rhn.redhat.com/errata/RHSA-2012-1491.html
- https://rhn.redhat.com/errata/RHSA-2012-1540.html
- https://rhn.redhat.com/errata/RHSA-2013-0496.html
- https://rhn.redhat.com/errata/RHSA-2013-1519.html
- https://rhn.redhat.com/errata/RHSA-2013-1783.html
- https://bugzilla.redhat.com/show_bug.cgi?id=869904
Frequently Asked Questions
What is the severity of REDHAT-BUG-869904?
The severity of REDHAT-BUG-869904 is considered high due to the potential exposure of stale data from deleted files.
How do I fix REDHAT-BUG-869904?
To fix REDHAT-BUG-869904, you should apply the latest patches or updates provided by Red Hat for your Linux Kernel.
What does REDHAT-BUG-869904 affect?
REDHAT-BUG-869904 affects the Red Hat Linux Kernel and can lead to data integrity issues.
Is REDHAT-BUG-869904 a common vulnerability?
REDHAT-BUG-869904 is not a common vulnerability but it poses significant risks in specific scenarios involving asynchronous I/O operations.
Who is impacted by REDHAT-BUG-869904?
Any users or systems running the affected versions of the Red Hat Linux Kernel are impacted by REDHAT-BUG-869904.
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