kexec-tools/kexec-tools-2.0.3-ppc-exec-stack-fix.patch
Dave Young b865438443 Pull patch kexec-tools-2.0.3-ppc-exec-stack-fix.patch
fix issue of exec on stack for ppc32
2012-12-21 15:19:55 +08:00

36 lines
1.1 KiB
Diff

Subject: [PATCH] ppc: exec stack fix
execstack shows ppc kexec has an executable stack,
this leaves it vulnerable to buffer overflows.
Fix it by adding ASFLAGS --noexecstack
Tested on PowerMac G4 Macmini:
Without the patch:
dave@darkstar:~/kexec-tools$ execstack build/sbin/kexec
X build/sbin/kexec
With the patch:
dave@darkstar:~/kexec-tools$ execstack build/sbin/kexec
- build/sbin/kexec
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
---
kexec/arch/ppc/Makefile | 2 ++
1 file changed, 2 insertions(+)
Index: kexec-tools-2.0.3/kexec/arch/ppc/Makefile
===================================================================
--- kexec-tools-2.0.3.orig/kexec/arch/ppc/Makefile
+++ kexec-tools-2.0.3/kexec/arch/ppc/Makefile
@@ -23,6 +23,8 @@ CPPFLAGS+=-I$(srcdir)/kexec/arch/$(ARCH)
ppc_KEXEC_SRCS += $(libfdt_SRCS)
+ASFLAGS += -Wa,--noexecstack
+
dist += kexec/arch/ppc/Makefile $(ppc_KEXEC_SRCS) \
kexec/arch/ppc/crashdump-powerpc.h kexec/arch/ppc/fixup_dtb.h \
kexec/arch/ppc/kexec-ppc.h kexec/arch/ppc/ops.h \