CVE-2011-4110: Null Pointer Dereference
First published: Fri Nov 04 2011(Updated: )
A flaw was found in the way Linux kernel handled user-defined key types. An unprivileged local user could use this flaw to crash the system. Reference: <a href="https://lkml.org/lkml/2011/11/15/363">https://lkml.org/lkml/2011/11/15/363</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.18-274.12.1.el5 | 0:2.6.18-274.12.1.el5 |
| redhat/kernel | <0:2.6.32-220.el6 | 0:2.6.32-220.el6 |
| redhat/kernel | <0:2.6.32-131.25.1.el6 | 0:2.6.32-131.25.1.el6 |
| redhat/kernel-rt | <0:2.6.33.9-rt31.79.el6 | 0:2.6.33.9-rt31.79.el6 |
| redhat/kernel-rt | <0:3.0.18-rt34.53.el6 | 0:3.0.18-rt34.53.el6 |
| debian/linux-2.6 | ||
| Linux kernel | =2.6 | |
| Linux Kernel | =2.6 |
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Reference Links
- http://www.securityfocus.com/bid/50755
- http://www.openwall.com/lists/oss-security/2011/11/21/19
- https://lkml.org/lkml/2011/11/15/363
- http://www.openwall.com/lists/oss-security/2011/11/22/6
- https://bugzilla.redhat.com/show_bug.cgi?id=751297
- http://www.openwall.com/lists/oss-security/2011/11/22/5
- http://www.ubuntu.com/usn/USN-1328-1
- http://www.ubuntu.com/usn/USN-1324-1
- http://www.ubuntu.com/usn/USN-1344-1
- http://secunia.com/advisories/47754
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- https://www.cve.org/CVERecord?id=CVE-2011-4110 https://nvd.nist.gov/vuln/detail/CVE-2011-4110
- https://access.redhat.com/errata/RHSA-2011:1479
- https://access.redhat.com/errata/RHSA-2011:1530
- https://access.redhat.com/errata/RHSA-2012:0116
- https://access.redhat.com/errata/RHSA-2012:0010
- https://access.redhat.com/errata/RHSA-2012:0333
- https://access.redhat.com/security/cve/CVE-2011-4110
- http://marc.info/?l=bugtraq&m=139447903326211&w=2
- https://launchpad.net/bugs/cve/CVE-2011-4110
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=531725&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=531725&action=edit
- https://rhn.redhat.com/errata/RHSA-2011-1479.html
- https://rhn.redhat.com/errata/RHSA-2011-1530.html
- https://rhn.redhat.com/errata/RHSA-2012-0010.html
- https://access.redhat.com/support/policy/updates/errata/
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9f35a33b8d06263a165efe3541d9aa0cdbd70b3b
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=756160
- https://rhn.redhat.com/errata/RHSA-2012-0116.html
- https://rhn.redhat.com/errata/RHSA-2012-0333.html
- https://security-tracker.debian.org/tracker/CVE-2011-4110
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4110
- https://nvd.nist.gov/vuln/detail/CVE-2011-4110
- https://ubuntu.com/security/CVE-2011-4110
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2011-4110?
CVE-2011-4110 is classified as a medium severity vulnerability due to its potential to crash the system when exploited by an unprivileged user.
How do I fix CVE-2011-4110?
To fix CVE-2011-4110, update the Linux kernel to versions 2.6.18-274.12.1.el5, 2.6.32-220.el6, or other remedial versions listed for your Linux distribution.
Which systems are affected by CVE-2011-4110?
CVE-2011-4110 affects specific versions of the Linux kernel including 2.6.18, 2.6.32, and others as indicated in the vulnerability details.
Can CVE-2011-4110 be exploited remotely?
No, CVE-2011-4110 requires local access because it involves an unprivileged local user exploiting the flaw.
What type of vulnerability is CVE-2011-4110?
CVE-2011-4110 is a denial of service vulnerability that impacts the stability of the Linux kernel.
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