CVE-2011-2497: Buffer Overflow
First published: Mon Jun 27 2011(Updated: )
Buffer overflow in bluetooth's l2cap config request. <a href="http://marc.info/?l=linux-kernel&m=130891911909436&w=2">http://marc.info/?l=linux-kernel&m=130891911909436&w=2</a> "A remote user can provide a small value for the command size field in the command header of an l2cap configuration request, resulting in an integer underflow when subtracting the size of the configuration request header. This results in copying a very large amount of data via memcpy() and destroying the kernel heap. Check for underflow." Acknowledgements: Red Hat would like to thank Dan Rosenberg for reporting this issue.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | <3.0 | |
| debian/linux-2.6 | ||
| Linux Kernel | <3.0 |
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Reference Links
- http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0
- http://marc.info/?l=linux-kernel&m=130891911909436&w=2
- http://www.openwall.com/lists/oss-security/2011/06/24/9
- https://bugzilla.redhat.com/show_bug.cgi?id=716805
- http://www.securityfocus.com/bid/48472
- http://www.osvdb.org/74679
- http://www.openwall.com/lists/oss-security/2011/06/27/3
- http://securityreason.com/securityalert/8359
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ac28817536797fd40e9646452183606f9e17f71
- http://marc.info/?l=linux-kernel&m=130891911909436&w=2
- https://launchpad.net/bugs/cve/CVE-2011-2497
- https://rhn.redhat.com/errata/RHSA-2011-1189.html
- https://rhn.redhat.com/errata/RHSA-2011-1253.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=716805#c4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=748664
- https://security-tracker.debian.org/tracker/CVE-2011-2497
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2497
- https://nvd.nist.gov/vuln/detail/CVE-2011-2497
- https://ubuntu.com/security/CVE-2011-2497
Frequently Asked Questions
What is the severity of CVE-2011-2497?
CVE-2011-2497 is considered to have a high severity due to the potential for remote code execution via a buffer overflow.
How do I fix CVE-2011-2497?
To fix CVE-2011-2497, update to a Linux kernel version higher than 3.0, which contains the necessary patches.
What systems are affected by CVE-2011-2497?
CVE-2011-2497 affects Linux kernel versions up to but not including 3.0.
Can CVE-2011-2497 be exploited remotely?
Yes, CVE-2011-2497 can be exploited remotely by sending a specially crafted Bluetooth L2CAP configuration request.
What are the consequences of exploiting CVE-2011-2497?
Exploiting CVE-2011-2497 can lead to denial of service or remote code execution on the affected system.
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