CVE-2024-46852 dma-buf: heaps: Fix off-by-one in CMA heap fault handler

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

CVE-2024-46852

CVE-2024-46852 — Linux kernel CMA heap off-by-one fix : The issue occurred when a mapping larger than the buffer size could be created via mremap, allowing an overflow bypass in dma_buf_mmap_internal. The CMA heap fault handler incorrectly bound the fault offset by 1 when validating the end of th...

CVE-2024-46852 dma-buf: heaps: Fix off-by-one in CMA heap fault handler

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...