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A flaw was found in the way certain disk names were interpreted by the Linux kernel. Block layer uses the "disk_name" field as a format string in a number of places. While this is normally not a problem due to how disk names are created (statically or incrementally), there is currently at least one way to define nearly arbitrary names via md. A privileged (uid 0) local user could potentially use this flaw to execute code at ring0. Acknowledgements: Red Hat would like to thank Kees Cook for reporting this issue.
Statement: This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5. This issue does affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, and Red Hat Enterprise MRG. Future updates for Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG may address this issue.
Created kernel tracking bugs for this issue Affects: fedora-all [bug 971662]
References: http://marc.info/?l=linux-kernel&m=137055204522556&w=2 http://www.openwall.com/lists/oss-security/2013/06/06/13
kernel-3.9.5-201.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.9.5-301.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.9.8-100.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
This issue has been addressed in following products: MRG for RHEL-6 v.2 Via RHSA-2013:1264 https://rhn.redhat.com/errata/RHSA-2013-1264.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6 Via RHSA-2013:1645 https://rhn.redhat.com/errata/RHSA-2013-1645.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only Via RHSA-2013:1783 https://rhn.redhat.com/errata/RHSA-2013-1783.html
This issue has been addressed in following products: Red Hat Enterprise Linux 6.4 EUS - Server and Compute Node Only Via RHSA-2014:0284 https://rhn.redhat.com/errata/RHSA-2014-0284.html