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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-04-10 13:31:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-04-10 13:31:34 -0700 |
| commit | fe5b5ef836c85fc687db4fa3548775fd363e25d4 (patch) | |
| tree | 76a9f2a037b908cfc76bcbc54e3f86596daa8cd3 /include | |
| parent | a6189a7407795b3f5167ea532ac85931cd26083a (diff) | |
| parent | 9c573cd313433f6c1f7236fe64b9b743500c1628 (diff) | |
Merge tag 'hardening-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening fixes from Kees Cook:
- gcc-plugins/stackleak: Avoid .head.text section (Ard Biesheuvel)
- ubsan: fix unused variable warning in test module (Arnd Bergmann)
- Improve entropy diffusion in randomize_kstack
* tag 'hardening-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randomize_kstack: Improve entropy diffusion
ubsan: fix unused variable warning in test module
gcc-plugins/stackleak: Avoid .head.text section
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/randomize_kstack.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/randomize_kstack.h b/include/linux/randomize_kstack.h index 5d868505a94e..6d92b68efbf6 100644 --- a/include/linux/randomize_kstack.h +++ b/include/linux/randomize_kstack.h @@ -80,7 +80,7 @@ DECLARE_PER_CPU(u32, kstack_offset); if (static_branch_maybe(CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT, \ &randomize_kstack_offset)) { \ u32 offset = raw_cpu_read(kstack_offset); \ - offset ^= (rand); \ + offset = ror32(offset, 5) ^ (rand); \ raw_cpu_write(kstack_offset, offset); \ } \ } while (0) |