CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel's vmwgfx driver allows for an integer overflow when validating user-supplied shader parameters, potentially leading to memory corruption or unauthorized access to sensitive data. This issue arises when the offset value approaches the maximum for unsigned 64-bit integers, allowing a malicious actor to bypass size checks and manipulate shader creation commands. Linux system administrators and developers utilizing the vmwgfx driver should prioritize applying the patch to mitigate the risk of exploitation.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size < (u64)size + (u64)offset drm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is near U64_MAX the unsigned addition wraps and the resulting tiny value passes the check. The unbounded offset is then stored in res->guest_memory_offset and forwarded to host SVGA shader-create commands. Use check_add_overflow() to detect the wrap and compare the resulting endpoint against the buffer size.