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