VB-Audio Matrix Drivers Local Privilege Escalation via Kernel Memory Exposure

VB-Audio Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a local privilege escalation vulnerability in the VBMatrix VAIO virtual audio driver (vbmatrixvaio64*_win10.sys). The driver allocates a 128-byte non-paged pool buffer and, upon receiving IOCTL 0x222060, maps it into user space using an MDL and MmMapLockedPagesSpecifyCache. Because the allocation size is not page-aligned, the mapping exposes the entire 0x1000-byte kernel page containing the buffer plus adjacent non-paged pool allocations with read/write permissions. An unprivileged local attacker can open a device handle (using the required 0x800 attribute flag), invoke the IOCTL to obtain the mapping, and then read or modify live kernel objects and pointers present on that page. This enables bypass of KASLR, arbitrary kernel memory read/write within the exposed page, corruption of kernel objects, and escalation to SYSTEM.

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将资源暴露给错误范围

VB-Audio Matrix 安全漏洞

VB-Audio Matrix是法国VB-Audio公司的一个实时音频路由软件。 VB-Audio Matrix 1.0.2.2及之前版本和2.0.2.2及之前版本存在安全漏洞，该漏洞源于VBMatrix VAIO虚拟音频驱动分配未页面对齐的缓冲区并映射到用户空间，可能导致本地权限提升。

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