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| author | Kees Cook <keescook@chromium.org> | 2024-03-09 23:24:48 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2024-04-04 00:45:03 +0300 |
| commit | 9c573cd313433f6c1f7236fe64b9b743500c1628 (patch) | |
| tree | 69e9397102c2704709368fb199287944bb295a4d /lib | |
| parent | bbda3ba626b9f57ff6063058877eca856f5b734d (diff) | |
| download | linux-9c573cd313433f6c1f7236fe64b9b743500c1628.tar.xz | |
randomize_kstack: Improve entropy diffusion
The kstack_offset variable was really only ever using the low bits for
kernel stack offset entropy. Add a ror32() to increase bit diffusion.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 39218ff4c625 ("stack: Optionally randomize kernel stack offset each syscall")
Link: https://lore.kernel.org/r/20240309202445.work.165-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions