REDHAT-BUG-652529
First published: Fri Nov 12 2010(Updated: )
Due to integer underflow and overflow issues when determining the number of pages required for maliciously crafted I/O requests, a local user could send a device ioctl that results in the sequential allocation of a very large number of pages, causing the OOM killer to be invoked and crashing the system: Proposed patch: <a href="http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=cb4644cac4a2797afc847e6c92736664d4b0ea34">http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=cb4644cac4a2797afc847e6c92736664d4b0ea34</a> Acknowledgements: Red Hat would like to thank Dan Rosenberg for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=commit;h=cb4644cac4a2797afc847e6c92736664d4b0ea34
- https://rhn.redhat.com/errata/RHSA-2011-0007.html
- https://rhn.redhat.com/errata/RHSA-2011-0330.html
- http://git.kernel.org/linus/cb4644cac4a2797afc847e6c92736664d4b0ea34
- https://bugzilla.redhat.com/show_bug.cgi?id=652529
Frequently Asked Questions
What is the severity of REDHAT-BUG-652529?
The severity of REDHAT-BUG-652529 is considered high due to the potential for crashing the system via excessive page allocation.
How do I fix REDHAT-BUG-652529?
To fix REDHAT-BUG-652529, ensure your Red Hat Linux Kernel is updated to the latest version that addresses this integer underflow and overflow issue.
Who is affected by REDHAT-BUG-652529?
Local users of the Red Hat Linux Kernel versions vulnerable to this issue are primarily affected by REDHAT-BUG-652529.
What triggers REDHAT-BUG-652529?
REDHAT-BUG-652529 is triggered by a maliciously crafted device ioctl that manipulates I/O requests leading to excessive page allocation.
What impact does REDHAT-BUG-652529 have on system stability?
The impact of REDHAT-BUG-652529 on system stability includes system crashes due to the invocation of the OOM killer from excessive memory allocation.
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