Integer overflow in drivers/gpu/drm/i915/i915gemexecbuffer.c in the i915 driver in the Direct Rendering Manager (DRM) subsystem in the Linux kernel through 3.8.3, as used in Google Chrome OS before 25.0.1364.173 and other products, allows local users to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted application that triggers many relocation copies, and potentially leads to a race condition.
Other sources
Linux kernel built with Direct Rendering Manager(DRM) i915 driver for the
the Direct Rendering Infrastructure(DRI) introduced by XFree86 4.0, is
vulnerable to a heap overflow flaw.
An user/program with access to the DRM driver could use this flaw to crash
the kernel, resulting in DoS or possibly escalate privileges.
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