CVE-2011-4081: Null Pointer Dereference
First published: Thu Oct 27 2011(Updated: )
crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux kernel | <3.1 | |
| Linux Kernel | <3.1 |
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Reference Links
- https://github.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
- http://www.openwall.com/lists/oss-security/2011/10/27/2
- https://bugzilla.redhat.com/show_bug.cgi?id=749475
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
- https://launchpad.net/bugs/cve/CVE-2011-4081
- http://git.kernel.org/linus/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=749484
- https://rhn.redhat.com/errata/RHSA-2012-0350.html
- https://rhn.redhat.com/errata/RHSA-2012-0010.html
- https://security-tracker.debian.org/tracker/CVE-2011-4081
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4081
- https://nvd.nist.gov/vuln/detail/CVE-2011-4081
- https://ubuntu.com/security/CVE-2011-4081
Frequently Asked Questions
What is the severity of CVE-2011-4081?
CVE-2011-4081 has a severity rating that indicates it can cause a denial of service due to a NULL pointer dereference.
How do I fix CVE-2011-4081?
To fix CVE-2011-4081, update the Linux kernel to version 3.1 or higher.
Who is affected by CVE-2011-4081?
CVE-2011-4081 affects local users of the Linux kernel versions prior to 3.1.
What is the impact of CVE-2011-4081?
The impact of CVE-2011-4081 includes potential denial of service and runtime errors due to ghash_setkey function calls.
What versions of the Linux kernel are vulnerable to CVE-2011-4081?
All versions of the Linux kernel prior to 3.1 are vulnerable to CVE-2011-4081.
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