Vulnerability Description
The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operation without a certain up-to-date verification, which allows local users to obtain sensitive information from kernel memory in opportunistic circumstances by writing to a file in an NFS filesystem and then reading the same file.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.13.3 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3Release NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2014/02/20/16Mailing ListThird Party Advisory
- http://www.ubuntu.com/usn/USN-2137-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2140-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1066939Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff2PatchThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3Release NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2014/02/20/16Mailing ListThird Party Advisory
- http://www.ubuntu.com/usn/USN-2137-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2140-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1066939Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff2PatchThird Party Advisory
FAQ
What is CVE-2014-2038?
CVE-2014-2038 is a vulnerability with a CVSS score of 2.1 (LOW). The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operation without a certain up-to-date verification, which allows l...
How severe is CVE-2014-2038?
CVE-2014-2038 has been rated LOW with a CVSS base score of 2.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-2038?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux.