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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2014-9710 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.
This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6 and 7. Future kernel updates for Red Hat Enterprise Linux 7 may address this issue.
Given the Moderate impact and the fact that BRTFS file system is no longer Technology preview in Red Hat Enterprise Linux 6 this issue is not currently planned to be addressed in future releases of Red Hat Enterprise Linux 6.
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected |
| Red Hat Enterprise Linux 7 | kernel | Will not fix |
| Red Hat Enterprise Linux 6 | kernel | Will not fix |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
Vulmon