CVE-2011-1080: Input Validation
First published: Tue Mar 01 2011(Updated: )
Description of problem: Struct tmp is copied from userspace. It is not checked whether the "name" field is NULL terminated. This may lead to buffer overflow and passing contents of kernel stack as a module name to try_then_request_module() and, consequently, to modprobe commandline. It would be seen by all userspace processes. References: <a href="http://seclists.org/oss-sec/2011/q1/309">http://seclists.org/oss-sec/2011/q1/309</a> <a href="https://lkml.org/lkml/2011/2/14/51">https://lkml.org/lkml/2011/2/14/51</a> Acknowledgements: Red Hat would like to thank Vasiliy Kulikov of Openwall for reporting this issue.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux kernel | =2.6.38-rc7 | |
| Linux kernel | =2.6.38-rc6 | |
| Linux kernel | =2.6.38-rc4 | |
| Linux kernel | =2.6.38.3 | |
| Linux kernel | <=2.6.38.8 | |
| Linux kernel | =2.6.38-rc3 | |
| Linux kernel | =2.6.38-rc5 | |
| Linux kernel | =2.6.38-rc2 | |
| Linux kernel | =2.6.38.6 | |
| Linux kernel | =2.6.38.1 | |
| Linux kernel | =2.6.38-rc1 | |
| Linux kernel | =2.6.38.5 | |
| Linux kernel | =2.6.38.2 | |
| Linux kernel | =2.6.38 | |
| Linux kernel | =2.6.38-rc8 | |
| Linux kernel | =2.6.38.4 | |
| Linux kernel | =2.6.38.7 | |
| Linux Kernel | <=2.6.38.8 | |
| Linux Kernel | =2.6.38 | |
| Linux Kernel | =2.6.38-rc1 | |
| Linux Kernel | =2.6.38-rc2 | |
| Linux Kernel | =2.6.38-rc3 | |
| Linux Kernel | =2.6.38-rc4 | |
| Linux Kernel | =2.6.38-rc5 | |
| Linux Kernel | =2.6.38-rc6 | |
| Linux Kernel | =2.6.38-rc7 | |
| Linux Kernel | =2.6.38-rc8 | |
| Linux Kernel | =2.6.38.1 | |
| Linux Kernel | =2.6.38.2 | |
| Linux Kernel | =2.6.38.3 | |
| Linux Kernel | =2.6.38.4 | |
| Linux Kernel | =2.6.38.5 | |
| Linux Kernel | =2.6.38.6 | |
| Linux Kernel | =2.6.38.7 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2011/03/01/10
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- https://bugzilla.redhat.com/show_bug.cgi?id=681262
- https://github.com/torvalds/linux/commit/d846f71195d57b0bbb143382647c2c6638b04c5a
- http://rhn.redhat.com/errata/RHSA-2011-0833.html
- http://downloads.avaya.com/css/P8/documents/100145416
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d846f71195d57b0bbb143382647c2c6638b04c5a
- https://launchpad.net/bugs/cve/CVE-2011-1080
- http://seclists.org/oss-sec/2011/q1/309
- https://lkml.org/lkml/2011/2/14/51
- http://git.kernel.org/linus/d846f711
- https://rhn.redhat.com/errata/RHSA-2011-0500.html
- https://rhn.redhat.com/errata/RHSA-2011-0498.html
- https://rhn.redhat.com/errata/RHSA-2011-0833.html
- https://security-tracker.debian.org/tracker/CVE-2011-1080
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1080
- https://nvd.nist.gov/vuln/detail/CVE-2011-1080
- https://ubuntu.com/security/CVE-2011-1080
Frequently Asked Questions
What is the severity of CVE-2011-1080?
CVE-2011-1080 is classified as a medium severity vulnerability that can lead to a buffer overflow.
How do I fix CVE-2011-1080?
To fix CVE-2011-1080, upgrade to a patched version of the Linux kernel that addresses this vulnerability.
What type of systems are affected by CVE-2011-1080?
CVE-2011-1080 affects Linux kernel versions up to 2.6.38.8 and includes several release candidates.
What is the impact of CVE-2011-1080?
The impact of CVE-2011-1080 includes potential exploitability leading to the leakage of sensitive data from the kernel stack.
Who discovered CVE-2011-1080?
CVE-2011-1080 was reported by security researchers but specific credit is often shared in public security mailing lists.
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