Hi, It was recently pointed out[1] that x86_64 brk entropy was not great, and that on all architectures the brk can (when the random offset is 0) be immediately adjacent to .bss, leaving no gap that could stop linear overflows from the .bss. Address both issues. -Kees Link: https://lore.kernel.org/linux-hardening/CA+2EKTVLvc8hDZc+2Yhwmus=dzOUG5E4gV7ayCbu0MPJTZzWkw@xxxxxxxxxxxxxx [1] Kees Cook (2): x86: Increase brk randomness entropy on x86_64 binfmt_elf: Leave a gap between .bss and brk arch/x86/kernel/process.c | 5 ++++- fs/binfmt_elf.c | 3 +++ 2 files changed, 7 insertions(+), 1 deletion(-) -- 2.34.1
