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authorLinus Torvalds <torvalds@linux-foundation.org>2024-10-05 10:19:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-10-05 10:19:14 -0700
commit9ec2236a0260f88362ab00510d19397c0e396587 (patch)
treed0a628903c52e3e5d74515f8b25b1bcf52905c2e
parentfb9b76749adb28d4cee88b296a9b21d834484541 (diff)
parent045244dd5d75c61ae37b7b96fe0a95805bd1842d (diff)
downloadlwn-9ec2236a0260f88362ab00510d19397c0e396587.tar.gz
lwn-9ec2236a0260f88362ab00510d19397c0e396587.zip
Merge tag 'hardening-v6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening fixes from Kees Cook: - gcc plugins: Avoid Kconfig warnings with randstruct (Nathan Chancellor) - MAINTAINERS: Add security/Kconfig.hardening to hardening section (Nathan Chancellor) - MAINTAINERS: Add unsafe_memcpy() to the FORTIFY review list * tag 'hardening-v6.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: MAINTAINERS: Add security/Kconfig.hardening to hardening section hardening: Adjust dependencies in selection of MODVERSIONS MAINTAINERS: Add unsafe_memcpy() to the FORTIFY review list
-rw-r--r--MAINTAINERS2
-rw-r--r--security/Kconfig.hardening4
2 files changed, 4 insertions, 2 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 5153c995d429..d74a07f8b010 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8914,6 +8914,7 @@ F: include/linux/fortify-string.h
F: lib/fortify_kunit.c
F: lib/memcpy_kunit.c
F: lib/test_fortify/*
+K: \bunsafe_memcpy\b
K: \b__NO_FORTIFY\b
FPGA DFL DRIVERS
@@ -12345,6 +12346,7 @@ F: include/linux/randomize_kstack.h
F: kernel/configs/hardening.config
F: lib/usercopy_kunit.c
F: mm/usercopy.c
+F: security/Kconfig.hardening
K: \b(add|choose)_random_kstack_offset\b
K: \b__check_(object_size|heap_object)\b
K: \b__counted_by\b
diff --git a/security/Kconfig.hardening b/security/Kconfig.hardening
index 2cff851ebfd7..c9d5ca3d8d08 100644
--- a/security/Kconfig.hardening
+++ b/security/Kconfig.hardening
@@ -340,7 +340,7 @@ choice
config RANDSTRUCT_FULL
bool "Fully randomize structure layout"
depends on CC_HAS_RANDSTRUCT || GCC_PLUGINS
- select MODVERSIONS if MODULES
+ select MODVERSIONS if MODULES && !COMPILE_TEST
help
Fully randomize the member layout of sensitive
structures as much as possible, which may have both a
@@ -356,7 +356,7 @@ choice
config RANDSTRUCT_PERFORMANCE
bool "Limit randomization of structure layout to cache-lines"
depends on GCC_PLUGINS
- select MODVERSIONS if MODULES
+ select MODVERSIONS if MODULES && !COMPILE_TEST
help
Randomization of sensitive kernel structures will make a
best effort at restricting randomization to cacheline-sized