CVE-2014-2038
LOW severity · CVSS 2.1 · Information disclosure
2.1CVSS LOW
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)0%
AV:L/AC:L/Au:N/C:P/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1066939 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=1066939Patch
- https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff24Patch
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=263b4509ec4d47e0da3e753f85a39ea12d1eff24
- http://www.openwall.com/lists/oss-security/2014/02/20/16Advisory
- http://www.ubuntu.com/usn/USN-2137-1Advisory
- http://www.ubuntu.com/usn/USN-2140-1Advisory