Vulnerability CVE-2014-9710
Published: 2015-05-27

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.

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 

 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
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