REDHAT-BUG-634457
First published: Thu Sep 16 2010(Updated: )
Description of problem: A vulnerability in the 32-bit compatibility layer for 64-bit systems was reported. It is caused by insecure allocation of user space memory when translating system call inputs to 64-bit. A stack pointer underflow can occur when using the "compat_alloc_user_space" method with an arbitrary length input. Reference: <a href="http://sota.gen.nz/compat1/">http://sota.gen.nz/compat1/</a> Upstream commit: <a href="http://git.kernel.org/linus/c41d68a513c71e35a14f66d71782d27a79a81ea6">http://git.kernel.org/linus/c41d68a513c71e35a14f66d71782d27a79a81ea6</a> Acknowledgements: Red Hat would like to thank Ben Hawkes for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux kernel |
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Reference Links
- http://sota.gen.nz/compat1/
- http://git.kernel.org/linus/c41d68a513c71e35a14f66d71782d27a79a81ea6
- http://seclists.org/fulldisclosure/2010/Sep/268
- https://access.redhat.com/kb/docs/DOC-40265
- http://seclists.org/fulldisclosure/2010/Sep/273
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c13
- http://www.h-online.com/open/news/forum/S-workaround-DOES-NOT-PREVENT-EXPLOIT/forum-116020/msg-14370942/read/
- https://access.redhat.com/security/cve/CVE-2010-3080
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c18
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c3
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=448317&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=448317&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c20
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c27
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c12
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c30
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c32
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=635642
- http://www.ksplice.com/uptrack/cve-2010-3081
- https://access.redhat.com/security/cve/CVE-2010-3081
- https://access.redhat.com/security/cve/CVE-2010-3301
- https://admin.fedoraproject.org/updates/search/CVE-2010-3081
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c35
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c41
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c45
- https://access.redhat.com/security/cve/CVE-2009-2692
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c47
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c39
- https://rhn.redhat.com/errata/RHSA-2010-0704.html
- https://rhn.redhat.com/errata/RHSA-2010-0705.html
- https://rhn.redhat.com/errata/RHSA-2010-0711.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=634457#c61
- https://rhn.redhat.com/errata/RHSA-2010-0718.html
- https://rhn.redhat.com/errata/RHSA-2010-0719.html
- https://rhn.redhat.com/errata/RHSA-2010-0758.html
- https://rhn.redhat.com/errata/RHSA-2010-0842.html
- https://rhn.redhat.com/errata/RHSA-2010-0882.html
- https://bugzilla.redhat.com/show_bug.cgi?id=634457
Frequently Asked Questions
What is the severity of REDHAT-BUG-634457?
The severity of REDHAT-BUG-634457 is considered high due to the risk of stack pointer underflow in user space memory allocation.
How do I fix REDHAT-BUG-634457?
To fix REDHAT-BUG-634457, ensure you update the Red Hat Kernel to the latest patched version that addresses this vulnerability.
Who is affected by REDHAT-BUG-634457?
Users of the 32-bit compatibility layer in 64-bit Red Hat Linux systems are affected by REDHAT-BUG-634457.
What is the impact of REDHAT-BUG-634457?
The impact of REDHAT-BUG-634457 may include potential unauthorized access to system resources or crashes due to invalid memory operations.
Is there a workaround for REDHAT-BUG-634457?
Currently, there are no known workarounds for REDHAT-BUG-634457 other than applying the necessary kernel updates.
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