The xfs_ioc_fsgetxattr function in fs/xfs/linux-2.6/xfs_ioctl.c in the Linux kernel before 2.6.36-rc4 does not initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via an ioctl call.
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://www.ubuntu.com/usn/USN-1000-1
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
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