An out-of-bounds memory access flaw was found in aiptek USB tablet driver in aiptek_probe() function in drivers/input/tablet/aiptek.c. The driver assumes that the interface always has at least one endpoint. By using a specially crafted USB device with no endpoints on one of its interfaces an unprivileged user with a physical access to the system can trigger a kernel NULL pointer dereference causing the system to panic. Acknowledgements: Red Hat would like to thank Ralf Spenneberg of OpenSource Security for reporting this issue. References: Proposed upstream patch: http://www.spinics.net/lists/linux-input/msg42294.html Upstream patch: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8e20cf2bce122ce9262d6034ee5d5b76fbb92f96
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1285331]
Statement: This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2, as the driver with the flaw is present in the products listed. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
References: Proposed upstream patch: http://www.spinics.net/lists/linux-input/msg42294.html
kernel-4.2.7-300.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
kernel-4.2.7-200.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.