X.Org DBE和Render扩展多个整数溢出漏洞

X.Org DBE and Render extensions multiple integer overflow vulnerabilities. X.Org is an open-source implementation of the X window system. The ProcRenderAddGlyphs() function in the X.Org Render extension and the ProcDbeGetVisualInfo() and ProcDbeSwapBuffers() functions in the DBE extension do not properly validate user input, allowing attackers to trigger integer overflow by sending specially crafted X requests to the X server. Local attackers may exploit this vulnerability to gain root user privileges