CVE-2024-38667 riscv: prevent pt_regs corruption for secondary idle threads

In the Linux kernel, the following vulnerability has been resolved: riscv: prevent ptregs corruption for secondary idle threads Top of the kernel thread stack should be reserved for ptregs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with...

kernel: load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary

A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable PIE, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory...

kernel: mm: keep a guard page below a grow-down stack segment

The doanonymouspage function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the heap, which allows context-dependent attackers to execute arbitrary code by writing to t...