CVE-2014-2038: Infoleak
First published: Wed Feb 19 2014(Updated: )
It was found that cached page was not up-to-date in certain cases when we were extending write to cover the full page and thus contained uninitalized data. A local user with write access to file on nfs share could use this flaw to leak kernel memory. Please note that apart from having security consequences (data leak), this bug is also a data corruptor. Introduced by: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c7559663">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c7559663</a> Upstream fix: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=263b4509">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=263b4509</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <3.13.3 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =13.10 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 | |
| Ubuntu | =12.04 | |
| Ubuntu | =13.10 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=263b4509ec4d47e0da3e753f85a39ea12d1eff24
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3
- http://www.openwall.com/lists/oss-security/2014/02/20/16
- http://www.ubuntu.com/usn/USN-2137-1
- http://www.ubuntu.com/usn/USN-2140-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1066939
- https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff24
- https://launchpad.net/bugs/cve/CVE-2014-2038
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c7559663
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=263b4509
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1067341
- https://rhn.redhat.com/errata/RHSA-2014-0328.html
- https://git.kernel.org/linus/c7559663e42f4294ffe31fe159da6b6a66b35d61
- https://git.kernel.org/linus/263b4509ec4d47e0da3e753f85a39ea12d1eff24
- https://security-tracker.debian.org/tracker/CVE-2014-2038
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2038
- https://nvd.nist.gov/vuln/detail/CVE-2014-2038
- https://ubuntu.com/security/CVE-2014-2038
Frequently Asked Questions
What is the severity of CVE-2014-2038?
CVE-2014-2038 has a medium severity rating as it allows local users to leak kernel memory.
How do I fix CVE-2014-2038?
To fix CVE-2014-2038, upgrade to a patched version of the Linux kernel or the relevant Debian package.
Which systems are affected by CVE-2014-2038?
CVE-2014-2038 affects various versions of the Linux kernel prior to 3.13.3 and certain Ubuntu releases.
Can a remote attacker exploit CVE-2014-2038?
No, CVE-2014-2038 can only be exploited by local users who have write access to specific files on an NFS share.
What are the potential impacts of CVE-2014-2038?
The potential impacts of CVE-2014-2038 include unauthorized disclosure of sensitive kernel memory data.
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