CVE-2009-0029: Input Validation
First published: Sat Jan 10 2009(Updated: )
The ABI in the Linux kernel 2.6.28 and earlier on s390, powerpc, sparc64, and mips 64-bit platforms requires that a 32-bit argument in a 64-bit register was properly sign extended when sent from a user-mode application, but cannot verify this, which allows local users to cause a denial of service (crash) or possibly gain privileges via a crafted system call.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=2.6.28 | |
| Debian Linux | =5.0 | |
| Debian Linux | =4.0 |
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Reference Links
- http://www.securityfocus.com/bid/33275
- http://secunia.com/advisories/33477
- https://bugzilla.redhat.com/show_bug.cgi?id=479969
- http://marc.info/?l=linux-kernel&m=123155111608910&w=2
- http://secunia.com/advisories/33674
- https://www.redhat.com/archives/fedora-package-announce/2009-January/msg01045.html
- http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html
- http://www.debian.org/security/2009/dsa-1749
- http://secunia.com/advisories/34394
- http://secunia.com/advisories/34981
- http://www.debian.org/security/2009/dsa-1787
- http://secunia.com/advisories/35011
- http://www.debian.org/security/2009/dsa-1794
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
- https://access.redhat.com/security/cve/CVE-2009-0029
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0029
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=329100
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=329100&action=edit
- https://www.cve.org/CVERecord?id=CVE-2009-0029 https://nvd.nist.gov/vuln/detail/CVE-2009-0029
- https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2009-0029.json
Frequently Asked Questions
What is the severity of CVE-2009-0029?
CVE-2009-0029 has a medium severity rating, as it can lead to a denial of service.
How do I fix CVE-2009-0029?
To mitigate CVE-2009-0029, upgrade to a Linux kernel version later than 2.6.28.
Who is affected by CVE-2009-0029?
CVE-2009-0029 affects local users on 64-bit s390, powerpc, sparc64, and mips platforms running Linux kernel versions 2.6.28 and earlier.
What does CVE-2009-0029 exploit?
CVE-2009-0029 exploits the Linux kernel's inability to properly verify sign extension of 32-bit arguments in a 64-bit register.
Is there a workaround for CVE-2009-0029?
Currently, the best workaround for CVE-2009-0029 is to ensure that user-mode applications do not pass improperly formatted arguments.
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