Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix the dmabuf object leak in fastrpcmaplookup In fastrpcmaplookup, the dmabufget function is called to obtain a reference to the dmabuf object for comparison purposes. However, this reference is never released whe...

CVE-2025-68252

CVE-2025-68252: In the Linux kernel misc: fastrpc component, a reference to a dma_buf obtained via dma_buf_get in fastrpc_map_lookup was not released on all return paths, causing a dma_buf memory leak. The fix adds dma_buf_put before returning (ensuring the temporary reference is released whether...

CVE-2022-48821: Use After Free

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: avoid double fput on failed usercopy If the copy back to userland fails for the FASTRPCIOCTLALLOCDMABUFF ioctl, we shouldn't assume that 'buf-dmabuf' is still valid. In fact, dmabuffd called fdinstall before, i.e...