CVE-2010-4076: Infoleak
First published: Mon Nov 01 2010(Updated: )
Description of problem: The TIOCGICOUNT device ioctl in amiserial.c allows unprivileged users to read uninitialized stack memory, because the "reserved" member of the serial_icounter_struct struct declared on the stack is not altered or zeroed before being copied back to the user. Reference: <a href="http://www.openwall.com/lists/oss-security/2010/10/06/6">http://www.openwall.com/lists/oss-security/2010/10/06/6</a> <a href="http://lkml.org/lkml/2010/9/15/389">http://lkml.org/lkml/2010/9/15/389</a> Acknowledgements: Red Hat would like to thank Dan Rosenberg for reporting this issue.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux kernel | <=2.6.36.1 | |
| Linux Kernel | <=2.6.36.1 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2010/10/25/3
- http://www.openwall.com/lists/oss-security/2010/10/07/1
- http://www.openwall.com/lists/oss-security/2010/10/06/6
- http://www.openwall.com/lists/oss-security/2010/09/25/2
- http://lkml.org/lkml/2010/9/15/389
- https://bugzilla.redhat.com/show_bug.cgi?id=648661
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d281da7ff6f70efca0553c288bb883e8605b3862
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d281da7ff6f70efca0553c288bb883e8605b3862
- https://launchpad.net/bugs/cve/CVE-2010-4076
- https://security-tracker.debian.org/tracker/CVE-2010-4076
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4076
- https://nvd.nist.gov/vuln/detail/CVE-2010-4076
- https://ubuntu.com/security/CVE-2010-4076
Frequently Asked Questions
What is the severity of CVE-2010-4076?
CVE-2010-4076 is considered a moderate severity vulnerability due to its ability to allow unprivileged users to read uninitialized stack memory.
How do I fix CVE-2010-4076?
To fix CVE-2010-4076, update to a patched version of the Linux kernel that addresses this vulnerability.
Who is affected by CVE-2010-4076?
CVE-2010-4076 affects users of the Linux kernel up to version 2.6.36.1, particularly those using the TIOCGICOUNT device ioctl.
What is the impact of exploiting CVE-2010-4076?
Exploiting CVE-2010-4076 may allow attackers to access sensitive information from uninitialized memory on affected systems.
When was CVE-2010-4076 disclosed?
CVE-2010-4076 was disclosed in October 2010.
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