CVE-2011-2942: Null Pointer Dereference
First published: Tue Aug 16 2011(Updated: )
A certain Red Hat patch to the __br_deliver function in net/bridge/br_forward.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging connectivity to a network interface that uses an Ethernet bridge device.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Red Hat Enterprise Linux | =5 | |
| Linux kernel | =2.6.18 | |
| Linux Kernel | =2.6.18 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=730917
- http://www.openwall.com/lists/oss-security/2011/10/24/3
- https://launchpad.net/bugs/cve/CVE-2011-2942
- https://rhn.redhat.com/errata/RHSA-2011-1386.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=748679
- https://rhn.redhat.com/errata/RHSA-2011-1408.html
- https://security-tracker.debian.org/tracker/CVE-2011-2942
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2942
- https://nvd.nist.gov/vuln/detail/CVE-2011-2942
- https://ubuntu.com/security/CVE-2011-2942
Frequently Asked Questions
What is the severity of CVE-2011-2942?
CVE-2011-2942 is considered to have a moderate severity level due to its potential to cause a denial of service.
How do I fix CVE-2011-2942?
To mitigate CVE-2011-2942, apply the latest kernel patches provided by your Linux distribution.
Which systems are affected by CVE-2011-2942?
CVE-2011-2942 affects Linux kernel version 2.6.18, specifically on Red Hat Enterprise Linux 5.
What impact can CVE-2011-2942 have on systems?
CVE-2011-2942 may result in a denial of service due to a NULL pointer dereference that can cause system crashes.
Who can exploit CVE-2011-2942?
Remote attackers can exploit CVE-2011-2942 to initiate a denial of service attack against vulnerable systems.
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