CVE-2014-2038

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.

Category

2.1
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2137-1 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2140-1 third party advisory vendor advisory
https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff24 third party advisory patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=263b4509ec4d47e0da3e753f85a39ea12d1eff24
http://www.openwall.com/lists/oss-security/2014/02/20/16 third party advisory mailing list
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3 release notes vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1066939 issue tracking third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2014-2038?
CVE-2014-2038 has been scored as a low severity vulnerability.
How to fix CVE-2014-2038?
To fix CVE-2014-2038, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-2038 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2014-2038 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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