CVE-2017-10663

La función sanity_check_ckpt en fs/f2fs/super.c en el kernel Linux en versiones anteriores a la 4.12.4 no valida los arrays blkoff y segno, lo que permite que usuarios locales obtengan privilegios mediante vectores sin especificar.

The Linux Kernel running on AMD64 systems will sometimes map the contents of PIE executable, the heap or ld.so to where the stack is mapped allowing attackers to more easily manipulate the stack. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service (system crash). It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.