CVE-2014-9710

MEDIUM

Description

The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html

http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html

http://www.openwall.com/lists/oss-security/2015/03/24/11

http://www.securitytracker.com/id/1032418

https://bugzilla.redhat.com/show_bug.cgi?id=1205079

https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339

Details

Source: MITRE

Published: 2015-05-27

Updated: 2016-12-31

Type: CWE-362

Risk Information

CVSS v2.0

Base Score: 6.9

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

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM