CVE-2010-4074: Infoleak
First published: Mon Nov 01 2010(Updated: )
Description of problem: The TIOCGICOUNT device ioctl in both mos7720.c and mos7840.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/2010/9/15/392">http://lkml.org/lkml/2010/9/15/392</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 | |
| Linux kernel | =2.6.36 | |
| Linux kernel | =2.6.36-rc1 | |
| Linux kernel | =2.6.36-rc2 | |
| Linux kernel | =2.6.36-rc3 | |
| Linux kernel | =2.6.36-rc4 | |
| Debian | =5.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=648659
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a0846f1868b11cd827bdfeaf4527d8b1b1c0b098
- http://www.openwall.com/lists/oss-security/2010/10/25/3
- http://lkml.org/lkml/2010/9/15/392
- http://www.openwall.com/lists/oss-security/2010/10/06/6
- http://www.openwall.com/lists/oss-security/2010/10/07/1
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.36/ChangeLog-2.6.36-rc5
- http://www.openwall.com/lists/oss-security/2010/09/25/2
- http://www.securityfocus.com/bid/45074
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.debian.org/security/2010/dsa-2126
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://secunia.com/advisories/42890
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a0846f1868b11cd827bdfeaf4527d8b1b1c0b098
- https://launchpad.net/bugs/cve/CVE-2010-4074
- http://git.kernel.org/linus/a0846f1868b11cd827bdfeaf4527d8b1b1c0b098
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://rhn.redhat.com/errata/RHSA-2011-0007.html
- https://security-tracker.debian.org/tracker/CVE-2010-4074
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4074
- https://nvd.nist.gov/vuln/detail/CVE-2010-4074
- https://ubuntu.com/security/CVE-2010-4074
Frequently Asked Questions
What is the severity of CVE-2010-4074?
CVE-2010-4074 is considered to have a medium severity due to the potential for unprivileged users to read sensitive information from uninitialized stack memory.
How do I fix CVE-2010-4074?
To fix CVE-2010-4074, it is recommended to update to a patched version of the Linux kernel that addresses this vulnerability.
Which versions of the Linux kernel are affected by CVE-2010-4074?
CVE-2010-4074 affects Linux kernel versions prior to 2.6.36, including the 2.6.36 release candidates.
Can CVE-2010-4074 be exploited remotely?
CVE-2010-4074 does not appear to be a remote exploit, as it requires local access to the affected systems.
What are the potential consequences of CVE-2010-4074?
The potential consequences of CVE-2010-4074 include unauthorized access to sensitive data stored in uninitialized memory.
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