CVE-2014-2038

LOW

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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

Details

Source: MITRE

Published: 2014-02-28

Updated: 2020-08-26

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW